1. What is health?
A state of complete physical, mental, and social well-being.
2. What is disease?
An abnormal condition affecting the body’s normal functioning.
3. What is the significance of health?
Ensures productivity, longevity, and quality of life.
4. What are the types of diseases?
Infectious and non-infectious diseases.
5. What is an infectious disease?
A disease caused by pathogens and transmissible between individuals.
6. What is a non-infectious disease?
A disease not caused by pathogens, e.g., cancer or diabetes.
7. What is a pathogen?
A disease-causing microorganism, e.g., bacteria, virus, or fungus.
8. What is the role of hygiene in health?
Prevents infection by reducing pathogen exposure.
9. What is epidemiology?
The study of disease patterns and their control in populations.
10. What is a communicable disease?
An infectious disease that spreads from one person to another.
11. What is a non-communicable disease?
A disease that cannot be transmitted, e.g., heart disease.
12. What are the modes of disease transmission?
Airborne, waterborne, vector-borne, and direct contact.
13. What is airborne transmission?
Spread of pathogens through air, e.g., tuberculosis.
14. What is waterborne transmission?
Spread of pathogens through contaminated water, e.g., cholera.
15. What is vector-borne transmission?
Spread of pathogens by vectors like mosquitoes, e.g., malaria.
16. What is direct contact transmission?
Spread through physical contact, e.g., syphilis.
17. What is a reservoir of infection?
A living or non-living source where pathogens survive.
18. What is an example of a human reservoir?
A person carrying typhoid bacteria.
19. What is a zoonotic disease?
A disease transmitted from animals to humans, e.g., rabies.
20. What is an epidemic?
A sudden increase in disease cases in a specific area.
21. What is a pandemic?
A global outbreak of a disease, e.g., COVID-19.
22. What is endemic disease?
A disease constantly present in a region, e.g., malaria in tropics.
23. What is the incubation period of a disease?
The time between pathogen exposure and symptom onset.
24. What is a carrier?
A person harboring pathogens without showing symptoms.
25. What is typhoid?
A bacterial disease caused by Salmonella typhi.
26. What is the mode of transmission of typhoid?
Contaminated food or water.
27. What are the symptoms of typhoid?
Fever, weakness, abdominal pain, and constipation.
28. What is the Widal test?
A diagnostic test for typhoid detecting antibodies.
29. What is the treatment for typhoid?
Antibiotics like ciprofloxacin or ceftriaxone.
30. What is pneumonia?
A lung infection caused by bacteria, viruses, or fungi.
31. What is the primary cause of bacterial pneumonia?
Streptococcus pneumoniae.
32. What are the symptoms of pneumonia?
Cough, fever, chest pain, and difficulty breathing.
33. What is the mode of transmission of pneumonia?
Airborne droplets from coughs or sneezes.
34. What is the treatment for bacterial pneumonia?
Antibiotics like amoxicillin or azithromycin.
35. What is the common cold?
A viral infection of the upper respiratory tract.
36. What is the primary cause of the common cold?
Rhinoviruses.
37. What are the symptoms of the common cold?
Sneezing, runny nose, sore throat, and mild fever.
38. What is the mode of transmission of the common cold?
Airborne droplets or direct contact.
39. What is the treatment for the common cold?
Symptomatic relief, as it is self-limiting.
40. What is malaria?
A parasitic disease caused by Plasmodium species.
41. What is the vector for malaria?
Female Anopheles mosquito.
42. What are the symptoms of malaria?
Fever, chills, sweating, and headache.
43. What is the life cycle of Plasmodium?
Involves human liver, blood cells, and mosquito stages.
44. What is the diagnostic test for malaria?
Blood smear microscopy or rapid diagnostic test.
45. What is the treatment for malaria?
Antimalarial drugs like chloroquine or artemisinin.
46. What is amoebiasis?
A parasitic infection caused by Entamoeba histolytica.
47. What is the mode of transmission of amoebiasis?
48. What are the symptoms of amoebiasis?
Abdominal pain, diarrhea, and bloody stools.
49. What is the treatment for amoebiasis?
Antiprotozoal drugs like metronidazole.
50. What is ascariasis?
A helminthic infection caused by Ascaris lumbricoides.
51. What is the mode of transmission of ascariasis?
Ingestion of eggs in contaminated food or soil.
52. What are the symptoms of ascariasis?
Abdominal pain, malnutrition, and intestinal blockage.
53. What is the treatment for ascariasis?
Anthelmintic drugs like albendazole.
54. What is filariasis?
A parasitic disease caused by filarial worms like Wuchereria bancrofti.
55. What is the vector for filariasis?
Culex mosquito.
56. What are the symptoms of filariasis?
Lymphatic swelling, leading to elephantiasis.
57. What is elephantiasis?
Severe swelling of limbs due to lymphatic filariasis.
58. What is the treatment for filariasis?
Antifilarial drugs like diethylcarbamazine.
59. What is ringworm?
A fungal infection of the skin caused by dermatophytes.
60. What are the symptoms of ringworm?
Red, itchy, ring-shaped patches on the skin.
61. What is the mode of transmission of ringworm?
Direct contact with infected skin or objects.
62. What is the treatment for ringworm?
Antifungal creams like clotrimazole.
63. What is immunity?
The body’s ability to resist or fight infections.
64. What are the types of immunity?
Innate and acquired immunity.
65. What is innate immunity?
Non-specific defense present at birth, e.g., skin barriers.
66. What is acquired immunity?
Specific immunity developed after exposure to pathogens.
67. What is active immunity?
Immunity gained by exposure to pathogens or vaccines.
68. What is passive immunity?
Immunity gained by receiving antibodies, e.g., via breast milk.
69. What is an example of passive immunity?
Transfer of antibodies from mother to fetus.
70. What is humoral immunity?
Immunity mediated by antibodies produced by B-cells.
71. What is cellular immunity?
Immunity mediated by T-cells targeting infected cells.
72. What is an antigen?
A substance that triggers an immune response.
73. What is an antibody?
A protein produced by B-cells to neutralize antigens.
74. What is the structure of an antibody?
Y-shaped with antigen-binding sites.
75. What are the types of antibodies?
IgG, IgM, IgA, IgD, and IgE.
76. What is the role of IgG?
Provides long-term immunity and crosses the placenta.
77. What is the role of IgM?
First antibody produced during an infection.
78. What is the role of IgA?
Protects mucosal surfaces, e.g., in saliva and tears.
79. What is the role of IgE?
Involved in allergic reactions and parasitic infections.
80. What is a lymphocyte?
A white blood cell involved in immunity, e.g., B-cells or T-cells.
81. What is the role of B-cells?
Produce antibodies to fight infections.
82. What is the role of T-cells?
Destroy infected cells or regulate immune responses.
83. What are the types of T-cells?
Cytotoxic, helper, and suppressor T-cells.
84. What is the role of cytotoxic T-cells?
Kill virus-infected or cancerous cells.
85. What is the role of helper T-cells?
Activate B-cells and cytotoxic T-cells.
86. What is the role of suppressor T-cells?
Regulate immune responses to prevent overactivity.
87. What is the thymus gland?
An organ where T-cells mature.
88. What is bone marrow?
The site where B-cells and other blood cells are produced.
89. What is a lymph node?
A structure filtering pathogens and housing immune cells.
90. What is the spleen?
An organ filtering blood and storing immune cells.
91. What is MALT?
Mucosa-associated lymphoid tissue, protecting mucosal surfaces.
92. What is the role of MALT?
Provides immunity at mucosal entry points like the gut.
93. What is a vaccine?
A preparation stimulating immunity against specific diseases.
94. What is the principle of vaccination?
Introduces antigens to induce active immunity without causing disease.
95. What is an attenuated vaccine?
A vaccine using weakened live pathogens, e.g., BCG vaccine.
96. What is an inactivated vaccine?
A vaccine using killed pathogens, e.g., polio vaccine.
97. What is a subunit vaccine?
A vaccine using parts of pathogens, e.g., hepatitis B vaccine.
98. What is a toxoid vaccine?
A vaccine using inactivated toxins, e.g., tetanus vaccine.
99. What is herd immunity?
Community protection when most people are immune to a disease.
100. What is the benefit of herd immunity?
Protects unvaccinated individuals by reducing disease spread.
101. What is the BCG vaccine?
A vaccine against tuberculosis.
102. What is the DPT vaccine?
A combined vaccine against diphtheria, pertussis, and tetanus.
103. What is the polio vaccine?
A vaccine preventing poliomyelitis, available as oral or injectable.
104. What is the MMR vaccine?
A combined vaccine against measles, mumps, and rubella.
105. What is an autoimmune disease?
A condition where the immune system attacks the body’s own tissues.
106. What is an example of an autoimmune disease?
Rheumatoid arthritis, affecting joints.
107. What is allergy?
An exaggerated immune response to harmless substances.
108. What is an allergen?
A substance causing an allergic reaction, e.g., pollen.
109. What are the symptoms of an allergy?
Sneezing, itching, rashes, or anaphylaxis.
110. What is anaphylaxis?
A severe, life-threatening allergic reaction.
111. What is the treatment for allergies?
Antihistamines or avoiding allergens.
112. What is AIDS?
Acquired Immunodeficiency Syndrome, caused by HIV.
113. What is HIV?
Human Immunodeficiency Virus, attacking the immune system.
114. What is the primary target of HIV?
Helper T-cells, weakening immunity.
115. What are the modes of HIV transmission?
Blood, sexual contact, mother-to-child, and contaminated needles.
116. What are the symptoms of AIDS?
Weight loss, opportunistic infections, and fever.
117. What is an opportunistic infection?
An infection occurring due to weakened immunity, e.g., tuberculosis in AIDS.
118. What is the diagnostic test for HIV?
ELISA or Western blot for detecting HIV antibodies.
119. What is antiretroviral therapy (ART)?
A treatment suppressing HIV replication, improving life quality.
120. What is the role of condoms in HIV prevention?
Reduces risk of sexual transmission.
121. What is PMTCT?
Prevention of mother-to-child transmission of HIV using ART.
122. What is the role of NACO?
National AIDS Control Organisation, managing HIV programs in India.
123. What is cancer?
A disease caused by uncontrolled cell division.
124. What is a tumor?
An abnormal mass of cells, benign or malignant.
125. What is a benign tumor?
A non-cancerous tumor that does not spread.
126. What is a malignant tumor?
A cancerous tumor that can spread to other tissues.
127. What is metastasis?
The spread of cancer cells to distant body parts.
128. What is a carcinogen?
A substance causing cancer, e.g., tobacco smoke.
129. What is the role of oncogenes?
Genes promoting uncontrolled cell division in cancer.
130. What is a tumor suppressor gene?
A gene inhibiting cell division, mutated in cancer.
131. What are the types of cancer?
Carcinoma, sarcoma, leukemia, and lymphoma.
132. What is carcinoma?
Cancer of epithelial tissues, e.g., lung cancer.
133. What is sarcoma?
Cancer of connective tissues, e.g., bone cancer.
134. What is leukemia?
Cancer of blood-forming tissues, e.g., bone marrow.
135. What is lymphoma?
Cancer of the lymphatic system, e.g., Hodgkin’s lymphoma.
136. What are the symptoms of cancer?
Unexplained weight loss, lumps, or persistent pain.
137. What is a biopsy?
A diagnostic procedure removing tissue for cancer examination.
138. What is mammography?
An X-ray technique for breast cancer detection.
139. What is a Pap smear?
A test for detecting cervical cancer.
140. What is the treatment for cancer?
Surgery, chemotherapy, radiotherapy, or immunotherapy.
141. What is chemotherapy?
Use of drugs to kill cancer cells.
142. What is radiotherapy?
Use of radiation to destroy cancer cells.
143. What is immunotherapy?
Stimulating the immune system to fight cancer.
144. What is a side effect of chemotherapy?
Hair loss, nausea, or weakened immunity.
145. What is drug abuse?
Misuse of drugs for non-medical purposes.
146. What is addiction?
A psychological or physical dependence on a substance.
147. What is a psychoactive drug?
A substance altering brain function, e.g., alcohol or cocaine.
148. What is alcohol abuse?
Excessive consumption of alcohol, leading to health issues.
149. What are the effects of alcohol abuse?
Liver damage, impaired judgment, and addiction.
150. What is cirrhosis?
Scarring of the liver due to chronic alcohol abuse.
151. What is tobacco abuse?
Use of tobacco products, causing health risks.
152. What are the health risks of tobacco?
Lung cancer, heart disease, and respiratory issues.
153. What is nicotine?
The addictive substance in tobacco.
154. What is passive smoking?
Inhaling tobacco smoke from others’ smoking.
155. What is the risk of passive smoking?
Increases lung cancer and respiratory disease risk.
156. What is opium?
A drug derived from the poppy plant, used in narcotics.
157. What are opioids?
Drugs like morphine and heroin derived from opium.
158. What is the effect of heroin?
Euphoria, followed by addiction and respiratory depression.
159. What is morphine?
An opioid used medically for pain relief but addictive.
160. What is cannabis?
A drug from the Cannabis plant, e.g., marijuana.
161. What are the effects of cannabis?
Altered perception, relaxation, or anxiety.
162. What is cocaine?
A stimulant drug causing euphoria and addiction.
163. What are the effects of cocaine?
Increased heart rate, agitation, and heart failure risk.
164. What is a hallucinogen?
A drug causing altered perceptions, e.g., LSD.
165. What is LSD?
Lysergic acid diethylamide, a hallucinogenic drug.
166. What is the effect of LSD?
Hallucinations, distorted reality, and mood swings.
167. What is withdrawal syndrome?
Symptoms experienced when stopping drug use, e.g., anxiety.
168. What is tolerance in drug abuse?
Needing higher drug doses to achieve the same effect.
169. What is the role of rehabilitation in drug abuse?
Helps individuals overcome addiction through therapy.
170. What is de-addiction therapy?
Treatment to manage withdrawal and prevent relapse.
171. What is the role of counseling in drug abuse?
Provides psychological support to overcome addiction.
172. What is a narcotic?
A drug causing sedation or pain relief, often addictive.
173. What is the Narcotics Control Bureau (NCB)?
An agency in India controlling drug trafficking.
174. What is the effect of drug abuse on society?
Increases crime, healthcare costs, and family disruption.
175. What is adolescence?
The transitional phase between childhood and adulthood.
176. Why are adolescents vulnerable to drug abuse?
Due to peer pressure, curiosity, and emotional stress.
177. What is peer pressure?
Influence from peers to adopt certain behaviors, e.g., drug use.
178. What is the role of education in preventing drug abuse?
Raises awareness about the risks of addiction.
179. What is the role of family in preventing drug abuse?
Provides emotional support and monitors behavior.
180. What is a relapse in drug addiction?
Return to drug use after a period of abstinence.
181. What is the role of exercise in health?
Improves immunity and reduces disease risk.
182. What is the role of nutrition in health?
Provides essential nutrients for body functions.
183. What is a balanced diet?
A diet containing all nutrients in appropriate proportions.
184. What is the role of proteins in health?
Support growth, repair, and immune function.
185. What is the role of carbohydrates in health?
Provide energy for daily activities.
186. What is the role of fats in health?
Store energy and support cell function.
187. What is the role of vitamins in health?
Regulate metabolic processes, e.g., vitamin C for immunity.
188. What is the role of minerals in health?
Support bone health and enzyme function, e.g., calcium.
189. What is obesity?
Excessive body fat accumulation, increasing disease risk.
190. What are the health risks of obesity?
Diabetes, heart disease, and joint problems.
191. What is diabetes?
A disease with high blood sugar due to insulin issues.
192. What is type 1 diabetes?
An autoimmune condition with no insulin production.
193. What is type 2 diabetes?
A condition with insulin resistance, linked to lifestyle.
194. What are the symptoms of diabetes?
Increased thirst, frequent urination, and fatigue.
195. What is the treatment for diabetes?
Insulin therapy or oral medications, plus lifestyle changes.
196. What is hypertension?
High blood pressure, increasing heart disease risk.
197. What are the symptoms of hypertension?
Often asymptomatic, but may include headaches.
198. What is the treatment for hypertension?
Antihypertensive drugs and lifestyle modifications.
199. What is coronary artery disease?
Narrowing of heart arteries, reducing blood flow.
200. What are the symptoms of coronary artery disease?
Chest pain, shortness of breath, and fatigue.
201. What is a heart attack?
Blockage of blood flow to the heart, causing tissue damage.
202. What is the treatment for a heart attack?
Angioplasty, medications, or bypass surgery.
203. What is a stroke?
A sudden interruption of brain blood supply, causing damage.
204. What are the symptoms of a stroke?
Sudden numbness, confusion, and difficulty speaking.
205. What is the treatment for a stroke?
Clot-dissolving drugs or surgical intervention.
206. What is asthma?
A chronic respiratory condition with airway inflammation.
207. What are the symptoms of asthma?
Wheezing, shortness of breath, and chest tightness.
208. What is the treatment for asthma?
Inhalers with bronchodilators or corticosteroids.
209. What is tuberculosis?
A bacterial infection caused by Mycobacterium tuberculosis.
210. What are the symptoms of tuberculosis?
Persistent cough, weight loss, and night sweats.
211. What is the treatment for tuberculosis?
A combination of antibiotics like isoniazid and rifampicin.
212. What is the DOTS strategy?
Directly Observed Treatment, Short-course for tuberculosis.
213. What is the benefit of DOTS?
Ensures treatment adherence, reducing resistance.
214. What is hepatitis?
Inflammation of the liver, often caused by viruses.
215. What is hepatitis B?
A viral infection causing liver damage, transmitted via blood.
216. What are the symptoms of hepatitis B?
Jaundice, fatigue, and abdominal pain.
217. What is the treatment for hepatitis B?
Antiviral drugs and supportive care.
218. What is the hepatitis B vaccine?
A vaccine preventing hepatitis B infection.
219. What is dengue?
A viral disease transmitted by Aedes mosquitoes.
220. What are the symptoms of dengue?
High fever, rash, and severe joint pain.
221. What is dengue hemorrhagic fever?
A severe form of dengue with bleeding and organ failure.
222. What is the treatment for dengue?
Supportive care, as no specific antiviral exists.
223. What is chikungunya?
224. What are the symptoms of chikungunya?
Fever, severe joint pain, and rash.
225. What is the treatment for chikungunya?
226. What is rabies?
A viral disease transmitted through animal bites.
227. What is the causative agent of rabies?
Rabies virus, affecting the nervous system.
228. What are the symptoms of rabies?
Fever, hydrophobia, and neurological dysfunction.
229. What is the treatment for rabies?
Post-exposure prophylaxis with rabies vaccine.
230. What is the role of vector control?
Reduces disease transmission by eliminating vectors.
231. What is an example of vector control?
Using insecticide-treated nets for malaria.
232. What is sanitation?
Maintaining clean environments to prevent diseases.
233. What is the role of sanitation in health?
Reduces waterborne and foodborne diseases.
234. What is potable water?
Water safe for drinking, free of pathogens.
235. What is water purification?
Removing contaminants from water to make it safe.
236. What is chlorination?
Adding chlorine to water to kill pathogens.
237. What is the role of waste management?
Prevents disease spread by proper disposal of waste.
238. What is biomedical waste?
Waste from medical facilities, e.g., syringes.
239. What is the treatment of biomedical waste?
Incineration or autoclaving to ensure safety.
240. What is the role of public health?
Promotes health and prevents diseases at the community level.
241. What is a health survey?
A study to assess disease prevalence and health status.
242. What is the role of WHO?
World Health Organization, coordinating global health efforts.
243. What is the role of immunization programs?
Prevent diseases through widespread vaccination.
244. What is the Pulse Polio Programme?
An initiative to eradicate polio through mass vaccination.
245. What is the role of ASHA workers?
Community health workers promoting health and vaccination.
246. What is the role of Anganwadi centers?
Provide health and nutrition services to children and mothers.
247. What is the National Health Mission?
An Indian initiative to improve healthcare access.
248. What is AYUSH?
A system promoting traditional Indian medicine like Ayurveda.
249. What is the role of yoga in health?
Improves physical and mental well-being.
250. What is stress?
A psychological response to challenging situations.
251. What are the effects of stress on health?
Increases risk of hypertension and mental disorders.
252. What is a mental disorder?
A condition affecting emotional or cognitive function, e.g., depression.
253. What is depression?
A mental disorder with persistent sadness and loss of interest.
254. What is the treatment for depression?
Antidepressants and psychotherapy.
255. What is anxiety?
A mental condition with excessive worry or fear.
256. What is the treatment for anxiety?
Anti-anxiety drugs and cognitive behavioral therapy.
257. What is schizophrenia?
A mental disorder with distorted thoughts and perceptions.
258. What is the treatment for schizophrenia?
Antipsychotic drugs and therapy.
259. What is the role of meditation in health?
Reduces stress and improves mental health.
260. What is the role of sleep in health?
Supports immune function and mental clarity.
261. What is insomnia?
Difficulty falling or staying asleep, affecting health.
262. What is the treatment for insomnia?
Sleep hygiene practices or medications.
263. What is a genetic disorder?
A disease caused by abnormal genes, e.g., sickle cell anemia.
264. What is sickle cell anemia?
A genetic disorder with abnormal hemoglobin, causing blood flow issues.
265. What is the treatment for sickle cell anemia?
Blood transfusions and medications like hydroxyurea.
266. What is hemophilia?
A genetic disorder impairing blood clotting.
267. What is the treatment for hemophilia?
Clotting factor replacement therapy.
268. What is Down syndrome?
A genetic disorder due to an extra chromosome 21.
269. What are the symptoms of Down syndrome?
Intellectual disability and distinct facial features.
270. What is genetic counseling?
Guidance on risks and management of genetic disorders.
271. What is a lifestyle disease?
A disease linked to lifestyle choices, e.g., obesity.
272. What is the role of smoking in disease?
Increases risk of lung cancer and heart disease.
273. What is the role of alcohol in disease?
Causes liver disease and increases cancer risk.
274. What is the role of physical inactivity?
Increases risk of obesity and cardiovascular diseases.
275. What is the role of a sedentary lifestyle?
Contributes to chronic diseases like diabetes.
276. What is the role of health education?
Promotes awareness of disease prevention and healthy habits.
277. What is the role of health camps?
Provide screenings and medical services in communities.
278. What is telemedicine?
Remote healthcare delivery using technology.
279. What is the benefit of telemedicine?
Improves access to healthcare in remote areas.
280. What is health insurance?
A system covering medical expenses for individuals.
281. What is the Ayushman Bharat scheme?
An Indian health insurance program for the underprivileged.
282. What is the role of NGOs in health?
Support community health programs and awareness.
283. What is the role of biotechnology in health?
Develops vaccines, diagnostics, and treatments.
284. What is gene therapy?
A technique to treat diseases by correcting defective genes.
285. What is the role of stem cells in health?
Used in regenerative medicine to repair tissues.
286. What is personalized medicine?
Treatment tailored to an individual’s genetic profile.
287. What is the role of AI in health?
Aids in disease diagnosis and treatment planning.
288. What is the role of wearable devices in health?
Monitor health parameters like heart rate.
289. What is the role of public-private partnerships?
Enhance healthcare delivery and infrastructure.
290. What is the role of community health?
Focuses on collective health improvement.
291. What is the significance of studying health and disease?
Improves prevention, treatment, and public health policies.
292. What are microbes?
Microorganisms like bacteria, fungi, viruses, and protozoa, invisible to the naked eye.
293. What is the significance of microbes in human welfare?
They contribute to food production, industry, waste management, and agriculture.
294. What are beneficial microbes?
Microbes that provide useful products or services, e.g., Lactobacillus in curd.
295. What is the role of microbes in household products?
They aid in producing foods like curd, cheese, and bread.
296. What is curd?
A fermented milk product formed by bacterial action.
297. Which microbe is used in curd production?
Lactobacillus, converting lactose to lactic acid.
298. What is the role of lactic acid in curd?
Coagulates milk proteins and gives curd its sour taste.
299. What is fermentation?
A metabolic process where microbes convert sugars into acids, alcohol, or gases.
300. What is the role of Saccharomyces cerevisiae in food production?
A yeast used in baking and brewing, producing CO2 and alcohol.
301. What is the role of yeast in bread making?
Produces CO2, causing dough to rise.
302. What is leavening in baking?
The process of dough rising due to gas production by yeast.
303. What is cheese?
A dairy product made by coagulating milk with microbes or enzymes.
304. Which microbes are used in cheese production?
Lactobacillus and Streptococcus, aiding milk fermentation.
305. What is rennet?
An enzyme used to coagulate milk in cheese production.
306. What is the role of Propionibacterium shermanii in cheese?
Produces CO2, creating holes in Swiss cheese.
307. What is yoghurt?
A fermented milk product made by bacterial action.
308. Which microbes are used in yoghurt production?
Lactobacillus bulgaricus and Streptococcus thermophilus.
309. What is the benefit of consuming yoghurt?
Improves gut health with probiotic bacteria.
310. What are probiotics?
Live microbes benefiting host health, e.g., gut bacteria.
311. What is buttermilk?
A fermented milk drink made by lactic acid bacteria.
312. What is the role of microbes in idli and dosa batter?
Leuconostoc and Streptococcus ferment rice and dal, producing CO2.
313. What is the role of fermentation in idli batter?
Makes batter spongy and enhances flavor.
314. What is toddy?
A fermented alcoholic drink made from palm sap by yeast.
315. What is the role of microbes in industrial products?
Produce alcohol, antibiotics, enzymes, and organic acids.
316. What is ethanol?
An alcohol produced by yeast fermentation of sugars.
317. Which microbe is used in ethanol production?
Saccharomyces cerevisiae, fermenting sugars to alcohol.
318. What is the industrial use of ethanol?
Used as biofuel, solvent, and in beverages.
319. What is molasses?
A byproduct of sugar production, used in ethanol fermentation.
320. What is distillation?
A process to purify ethanol from fermented mixtures.
321. What is an antibiotic?
A microbial compound inhibiting pathogen growth.
322. Who discovered the first antibiotic?
Alexander Fleming, discovering penicillin.
323. What is penicillin?
An antibiotic produced by Penicillium fungi.
324. Which microbe produces penicillin?
Penicillium notatum or Penicillium chrysogenum.
325. What is the role of antibiotics in medicine?
Treat bacterial infections by killing or inhibiting bacteria.
326. What is streptomycin?
An antibiotic produced by Streptomyces griseus.
327. What is tetracycline?
An antibiotic produced by Streptomyces species.
328. What is the source of erythromycin?
Streptomyces erythreus, used for bacterial infections.
329. What is antibiotic resistance?
The ability of bacteria to survive antibiotic treatment.
330. What causes antibiotic resistance?
Overuse or misuse of antibiotics, promoting resistant strains.
331. What is citric acid?
An organic acid produced industrially by microbes.
332. Which microbe produces citric acid?
Aspergillus niger, fermenting sugars.
333. What is the industrial use of citric acid?
Used as a preservative and flavoring agent in food.
334. What is acetic acid?
An organic acid forming vinegar, produced by microbes.
335. Which microbe produces acetic acid?
Acetobacter aceti, oxidizing ethanol to acetic acid.
336. What is the use of acetic acid?
Used in vinegar, chemicals, and food preservation.
337. What is lactic acid?
An acid produced by lactic acid bacteria during fermentation.
338. Which microbe produces lactic acid industrially?
Lactobacillus species, fermenting sugars.
339. What is the use of lactic acid?
Used in food, cosmetics, and biodegradable plastics.
340. What is butanol?
An alcohol produced by microbial fermentation.
341. Which microbe produces butanol?
Clostridium acetobutylicum, fermenting sugars.
342. What is the industrial use of butanol?
Used as a solvent and biofuel.
343. What are enzymes?
Proteins produced by microbes, catalyzing biochemical reactions.
344. What is amylase?
An enzyme breaking down starch, produced by Aspergillus.
345. What is the use of amylase?
Used in food processing and textile industries.
346. What is protease?
An enzyme breaking down proteins, produced by Bacillus.
347. What is the use of protease?
Used in detergents and leather processing.
348. What is lipase?
An enzyme breaking down fats, produced by Candida.
349. What is the use of lipase?
Used in food and detergent industries.
350. What is streptokinase?
An enzyme dissolving blood clots, produced by Streptococcus.
351. What is the medical use of streptokinase?
Treats heart attacks by clearing blocked arteries.
352. What is cyclosporin A?
An immunosuppressant drug produced by Trichoderma polysporum.
353. What is the use of cyclosporin A?
Prevents organ transplant rejection.
354. What is a statin?
A drug lowering cholesterol, produced by Monascus purpureus.
355. What is the use of statins?
Reduces risk of heart disease.
356. What is sewage?
Wastewater containing human excreta, household, and industrial waste.
357. What is sewage treatment?
A process to remove contaminants from sewage using microbes.
358. What is the goal of sewage treatment?
Produce clean water and safe sludge for disposal.
359. What are the stages of sewage treatment?
Primary, secondary, and tertiary treatment.
360. What is primary sewage treatment?
Physical removal of solids by sedimentation and filtration.
361. What is secondary sewage treatment?
Biological degradation of organic matter by microbes.
362. What is tertiary sewage treatment?
Chemical treatment to remove nutrients and pathogens.
363. What is activated sludge?
A microbial biomass degrading organic matter in sewage.
364. Which microbes are involved in activated sludge?
Aerobic bacteria like Zoogloea and fungi.
365. What is an aeration tank?
A tank where sewage is mixed with air and microbes for treatment.
366. What is the role of aeration in sewage treatment?
Provides oxygen for aerobic microbial decomposition.
367. What is sludge?
Solid residue settled during sewage treatment.
368. What is flocculation in sewage treatment?
Aggregation of particles to form settleable flocs.
369. What is a clarifier in sewage treatment?
A tank separating treated water from sludge.
370. What is anaerobic digestion?
Decomposition of sludge by anaerobic microbes, producing biogas.
371. What is biogas?
A mixture of methane and CO2 produced by anaerobic digestion.
372. Which microbes produce biogas?
Methanogenic bacteria like Methanobacterium.
373. What is the composition of biogas?
60–70% methane, 30–40% CO2, and trace gases.
374. What is the use of biogas?
Used as a renewable fuel for cooking and electricity.
375. What is a biogas plant?
A system converting organic waste into biogas and manure.
376. What is the role of a digester in a biogas plant?
Provides an anaerobic environment for biogas production.
377. What is gobar gas?
Biogas produced from cow dung, rich in methane.
378. What is the advantage of biogas plants?
Provides clean energy and reduces waste.
379. What is BOD?
Biochemical Oxygen Demand, measuring organic pollution in water.
380. What is the significance of BOD?
High BOD indicates high organic pollution, reducing oxygen.
381. How is BOD reduced in sewage treatment?
By microbial degradation of organic matter.
382. What is effluent?
Treated water discharged from sewage treatment plants.
383. What is the role of chlorination in sewage treatment?
Disinfects effluent to kill pathogens.
384. What is a sewage treatment plant (STP)?
A facility treating wastewater before release or reuse.
385. What is the role of microbes in wastewater treatment?
Degrade organic matter and pollutants.
386. What is bioremediation?
Using microbes to clean up environmental pollutants.
387. What is an example of bioremediation?
Using Pseudomonas to degrade oil spills.
388. Which microbe degrades oil spills?
Pseudomonas putida, breaking down hydrocarbons.
389. What is phytoremediation?
Using plants and associated microbes to clean pollutants.
390. What is the role of microbes in phytoremediation?
Degrade pollutants in the rhizosphere.
391. What is a biofilter?
A system using microbes to remove pollutants from air or water.
392. What is the role of microbes in biofilters?
Degrade volatile organic compounds and odors.
393. What is biocontrol?
Using microbes or organisms to control pests and diseases.
394. What is the advantage of biocontrol?
Reduces chemical pesticide use, being eco-friendly.
395. What is a biopesticide?
A microbial or natural agent controlling pests.
396. What is Bacillus thuringiensis (Bt)?
A bacterium producing toxins lethal to insect pests.
397. What is the mode of action of Bt?
Produces Cry proteins, damaging insect gut.
398. What is an example of a Bt-based biopesticide?
Bt spray for caterpillar control.
399. What is Trichoderma?
A fungus used as a biocontrol agent against plant pathogens.
400. What is the role of Trichoderma in biocontrol?
Inhibits fungal pathogens by mycoparasitism.
401. What is a biofertilizer?
A microbial preparation enhancing soil fertility.
402. What is the role of biofertilizers?
Fix nitrogen or solubilize nutrients for plants.
403. What is nitrogen fixation?
Conversion of atmospheric nitrogen into plant-usable forms by microbes.
404. Which microbe fixes nitrogen in leguminous plants?
Rhizobium, forming root nodules.
405. What is the role of root nodules?
House nitrogen-fixing bacteria like Rhizobium.
406. What is the enzyme for nitrogen fixation?
Nitrogenase, converting N2 to ammonia.
407. What is Azotobacter?
A free-living nitrogen-fixing bacterium in soil.
408. What is the benefit of Azotobacter?
Enriches soil nitrogen without symbiosis.
409. What is Azospirillum?
A nitrogen-fixing bacterium associated with grass roots.
410. What is the role of Azospirillum?
Fixes nitrogen and promotes plant growth.
411. What is Anabaena?
A cyanobacterium fixing nitrogen in rice fields.
412. What is the role of Anabaena in agriculture?
Increases soil nitrogen in paddy fields.
413. What is Nostoc?
A cyanobacterium used as a biofertilizer.
414. What is phosphate solubilization?
Microbial conversion of insoluble phosphates to plant-usable forms.
415. Which microbe solubilizes phosphate?
Pseudomonas fluorescens, releasing organic acids.
416. What is a mycorrhiza?
A symbiotic association between fungi and plant roots.
417. What is the role of mycorrhizae?
Enhance nutrient and water uptake for plants.
418. What is VAM?
Vesicular Arbuscular Mycorrhiza, a type of mycorrhiza.
419. What is the benefit of VAM?
Improves phosphate uptake and drought resistance.
420. What is Glomus?
A mycorrhizal fungus used as a biofertilizer.
421. What is the role of organic farming?
Uses biofertilizers and biocontrol for sustainable agriculture.
422. What is the advantage of organic farming?
Reduces chemical inputs and improves soil health.
423. What is a compost?
Organic matter decomposed by microbes, used as fertilizer.
424. Which microbes decompose compost?
Bacteria like Bacillus and fungi like Aspergillus.
425. What is vermicompost?
Compost produced by earthworms and microbes.
426. What is the role of microbes in vermicompost?
Degrade organic waste with earthworm activity.
427. What is green manure?
Plants decomposed by microbes to enrich soil.
428. Which microbes decompose green manure?
Soil bacteria and fungi, releasing nutrients.
429. What is a microbial consortium?
A mix of beneficial microbes used in agriculture.
430. What is the benefit of a microbial consortium?
Enhances soil fertility and plant growth synergistically.
431. What is a starter culture?
A microbial preparation initiating fermentation.
432. What is the role of starter cultures in food?
Ensure consistent fermentation, e.g., in cheese.
433. What is single-cell protein (SCP)?
Protein derived from microbes like algae or fungi.
434. Which microbes produce SCP?
Spirulina, Chlorella, and Saccharomyces cerevisiae.
435. What is the advantage of SCP?
Provides a sustainable protein source.
436. What is Spirulina?
A cyanobacterium used as a protein-rich food supplement.
437. What is the benefit of Spirulina?
High protein and nutrient content for human consumption.
438. What is the role of microbes in wine production?
Saccharomyces cerevisiae ferments grape juice to alcohol.
439. What is the role of malolactic fermentation?
Converts malic acid to lactic acid in wine, softening flavor.
440. Which microbe performs malolactic fermentation?
Oenococcus oeni, a lactic acid bacterium.
441. What is beer?
A fermented beverage made from barley by yeast.
442. Which microbe is used in beer production?
Saccharomyces cerevisiae or Saccharomyces pastorianus.
443. What is the role of hops in beer?
Add bitterness and act as a natural preservative.
444. What is whisky?
A distilled alcoholic beverage from fermented grains.
445. What is the role of microbes in whisky production?
Yeast ferments grains to produce alcohol.
446. What is vinegar?
A sour liquid produced by microbial oxidation of ethanol.
447. Which microbe produces vinegar?
Acetobacter aceti, converting ethanol to acetic acid.
448. What is soy sauce?
A fermented condiment made from soybeans and wheat.
449. Which microbes produce soy sauce?
Aspergillus oryzae and lactic acid bacteria.
450. What is miso?
A fermented paste made from soybeans and rice.
451. Which microbe produces miso?
Aspergillus oryzae, fermenting the mixture.
452. What is tempeh?
A fermented soybean product made by Rhizopus.
453. What is the role of Rhizopus in tempeh?
Binds soybeans into a protein-rich cake.
454. What is the benefit of tempeh?
High protein content and improved digestibility.
455. What is sauerkraut?
Fermented cabbage made by lactic acid bacteria.
456. Which microbes produce sauerkraut?
Leuconostoc and Lactobacillus species.
457. What is kimchi?
A fermented vegetable dish from Korea, rich in probiotics.
458. Which microbes produce kimchi?
Lactic acid bacteria like Lactobacillus plantarum.
459. What is the role of microbes in silage?
Ferment plant material to preserve fodder.
460. Which microbes produce silage?
Lactic acid bacteria, creating an acidic environment.
461. What is the role of microbes in leather tanning?
Produce enzymes like proteases for hide processing.
462. Which microbe produces enzymes for leather?
Aspergillus niger, providing proteases.
463. What is the role of microbes in textile industries?
Produce enzymes for fabric processing, e.g., cellulases.
464. What is cellulase?
An enzyme breaking down cellulose, produced by Trichoderma.
465. What is the use of cellulase?
Used in denim fading and bio-polishing fabrics.
466. What is the role of microbes in paper production?
Produce enzymes to break down lignin and cellulose.
467. Which microbe produces enzymes for paper?
Trichoderma reesei, providing cellulases.
468. What is the role of microbes in detergent production?
Produce enzymes like proteases and lipases.
469. What is the role of enzymes in detergents?
Break down stains like proteins and fats.
470. What is the role of microbes in biofuel production?
Produce ethanol and biodiesel from biomass.
471. Which microbe produces biodiesel?
Microalgae like Chlorella, accumulating lipids.
472. What is the advantage of microbial biofuels?
Renewable and reduces greenhouse gas emissions.
473. What is the role of microbes in mining?
Bioleach metals from ores, e.g., copper.
474. Which microbe is used in bioleaching?
Thiobacillus ferrooxidans, oxidizing metal sulfides.
475. What is the role of microbes in plastic degradation?
Break down plastics using enzymes.
476. Which microbe degrades plastics?
Ideonella sakaiensis, producing PETase enzyme.
477. What is the role of microbes in pesticide degradation?
Degrade chemical pesticides in soil.
478. Which microbe degrades pesticides?
Pseudomonas species, metabolizing toxins.
479. What is the role of microbes in dye degradation?
Break down textile dyes in wastewater.
480. Which microbe degrades dyes?
Shewanella, reducing dye molecules.
481. What is the role of microbes in soil health?
Decompose organic matter and cycle nutrients.
482. What is humus?
Organic matter decomposed by microbes, enriching soil.
483. What is the role of actinomycetes in soil?
Degrade complex organic compounds like lignin.
484. What is the role of microbes in carbon cycling?
Decompose organic matter, releasing CO2.
485. What is the role of microbes in nitrogen cycling?
Fix nitrogen and convert it to plant-usable forms.
486. What is denitrification?
Conversion of nitrates to nitrogen gas by microbes.
487. Which microbe performs denitrification?
Pseudomonas denitrificans, reducing nitrates.
488. What is nitrification?
Conversion of ammonia to nitrates by microbes.
489. Which microbes perform nitrification?
Nitrosomonas and Nitrobacter species.
490. What is the role of microbes in sulfur cycling?
Convert sulfur compounds, aiding nutrient availability.
491. Which microbe reduces sulfate?
Desulfovibrio, producing hydrogen sulfide.
492. What is the role of microbes in phosphorus cycling?
Solubilize phosphates for plant uptake.
493. What is a microbial fuel cell?
A device generating electricity from microbial metabolism.
494. Which microbe is used in microbial fuel cells?
Shewanella oneidensis, transferring electrons.
495. What is the advantage of microbial fuel cells?
Produces clean energy from organic waste.
496. What is the role of microbes in probiotics?
Improve gut health and immunity.
497. What is Lactobacillus casei?
A probiotic bacterium used in dairy products.
498. What is Bifidobacterium?
A probiotic bacterium improving gut flora.
499. What is the role of microbes in vaccines?
Produce antigens for vaccine development.
500. Which microbe is used in hepatitis B vaccine?
Genetically modified Saccharomyces cerevisiae.
501. What is the role of microbes in insulin production?
Produce recombinant insulin in bioreactors.
502. Which microbe produces recombinant insulin?
Escherichia coli, engineered with human insulin gene.
503. What is the role of microbes in hormone production?
Produce hormones like growth hormone via recombinant DNA.
504. What is the role of microbes in vitamin production?
Synthesize vitamins like B12 and riboflavin.
505. Which microbe produces vitamin B12?
Propionibacterium freudenreichii.
506. What is the role of microbes in pigment production?
Produce pigments for food and textiles.
507. Which microbe produces beta-carotene?
Blakeslea trispora, used as a food colorant.
508. What is the role of microbes in flavor production?
Produce flavor compounds like vanillin.
509. Which microbe produces vanillin?
Streptomyces, via fermentation.
510. What is the role of microbes in biosurfactants?
Produce surfactants for industrial and environmental use.
511. Which microbe produces biosurfactants?
Bacillus subtilis, producing surfactin.
512. What is the role of microbes in bioplastics?
Produce biodegradable plastics like PHA.
513. Which microbe produces PHA?
Cupriavidus necator, accumulating polyhydroxyalkanoates.
514. What is the advantage of bioplastics?
Biodegradable, reducing plastic pollution.
515. What is the role of microbes in bioethanol production?
Ferment biomass to produce ethanol as biofuel.
516. Which microbe produces bioethanol?
Zymomonas mobilis, fermenting sugars efficiently.
517. What is the role of microbes in methane production?
Produce methane in anaerobic digestion.
518. What is the role of microbes in hydrogen production?
Produce hydrogen gas via fermentation.
519. Which microbe produces hydrogen?
Clostridium species, fermenting organic matter.
520. What is the role of microbes in aquaculture?
Improve water quality and fish health.
521. Which microbe is used in aquaculture?
Bacillus subtilis, as a probiotic for fish.
522. What is the role of microbes in sericulture?
Control silkworm diseases using biocontrol agents.
523. What is the role of microbes in apiculture?
Protect bees from pathogens via probiotics.
524. What is the role of microbes in poultry farming?
Improve gut health with probiotics, reducing antibiotics.
525. What is the role of microbes in dairy farming?
Enhance milk production with probiotic feed.
526. What is the role of microbes in mushroom cultivation?
Decompose substrates for mushroom growth.
527. Which microbe aids mushroom cultivation?
Thermophilic bacteria, preparing compost.
528. What is the role of microbes in food preservation?
Produce acids or alcohols to inhibit spoilage.
529. What is pickling?
Preserving food in acidic conditions using microbes.
530. What is the role of microbes in composting toilets?
Decompose human waste into safe compost.
531. What is the role of microbes in landfill management?
Degrade organic waste, producing methane.
532. What is the role of microbes in air purification?
Degrade volatile pollutants in biofilters.
533. What is the role of microbes in water purification?
Degrade organic pollutants in water treatment.
534. What is the role of microbes in soil remediation?
Degrade contaminants like pesticides and heavy metals.
535. What is the role of microbes in climate change?
Influence carbon and methane cycles.
536. What is the role of microbes in greenhouse gas reduction?
Degrade organic waste, reducing methane emissions.
537. What is the role of microbes in sustainable agriculture?
Enhance soil fertility and reduce chemical inputs.
538. What is the role of microbes in food security?
Increase crop yields through biofertilizers and biocontrol.
539. What is the role of microbes in public health?
Produce antibiotics and treat sewage, preventing diseases.
540. What is the role of microbes in biotechnology?
Produce recombinant proteins and industrial products.
541. What is the role of microbes in nanotechnology?
Synthesize nanoparticles for medical and industrial use.
542. What is the role of microbes in synthetic biology?
Engineered to produce novel compounds.
543. What is the role of microbes in space exploration?
Support life systems, e.g., waste recycling.
544. What is the role of microbes in forensic science?
Aid in estimating time of death via microbial succession.
545. What is the role of microbes in archaeology?
Preserve or degrade artifacts, aiding study.
546. What is the role of microbes in art conservation?
Degrade or stabilize materials in artifacts.
547. What is the future of microbes in human welfare?
Innovations in biofuels, bioremediation, and health.
548. What is the significance of studying microbes?
Enhances human welfare through diverse applications.
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