Microbes in Human Welfare
Practice Questions
MCQ (Single Correct Answer)
1

Match the organisms given in Column I to their functions given in Column II and choose the correct option.

Column I Column II
A. Thiobacillus 1. Free-living nitrogen-fixing cyanobacteria
B. Nitrosomonas 2. Denitrification
C. Nostoc 3. Free-living aerobic nitrogen-fixing bacteria
D. Azotobactor 4. $$\mathrm{NH_3}$$ to Nitrite

AIIMS 2018
2

Match Column I (Antibiotic) with Column II (Source) and choose the correct option from the codes given below.

Column I Column II
A. Fumagillin 1. Gliocladium virens
B. Bacitracin 2. Streptomyces griseus
C. Streptomycin 3. Bacillus polymyxa
D. Viridin 4. Aspergillus fumigatus
E. Polymixin 5. Bacillus licheniformis

AIIMS 2018