Microbes in Human Welfare

Which of the following can be used as a biocontrol agent in the treatment of plant disease?

1. Anabaena
2. Lactobacillus
3. Trichoderma
4. Chlorella

Which of the following is a commercial blood cholesterol lowering agent?

1. Streptokinase
2. Lipases
3. Cyclosporin A
4. Statin

Conversion of milk to curd improves its nutritional value by increasing the amount of

1. vitamin D
2. vitamin A
3. vitamin B12
4. vitamin E

Select the mismatch :

1. Rhodospirillum - Mycorrhiza
2. Anabaena - Nitrogen fixer
3. Rhizobium - Alfalfa
4. Frankia - Alnus

Which of the following in sewage treatment removes suspended solids ?

1. Secondary treatment
2. Tertiary treatment
3. Primary treatment
4. Sludge treatment

Which of the following is correctly matched for the product produced by them ?

1. Acetobacter aceti : Antibiotics
2. Penicillium notatum : Acetic acid
3. Methanobacterium : Lactic acid
4. Saccharomyces cerevisiae : Ethanol

Which of the following is wrongly matched in the given table?

1. Microbe - Streptococcus, Product - Streptokinase, Application - Removal of clot from blood vessel
2. Microbe - Trichoderma polysporum, Product - Cyclosporin A, Application - Immunosuppressive drug
3. Microbe - Monascus purpureus, Product - Statins, Application - Lowering of blood cholesterol
4. Microbe - Clostridium butylicum, Product - Lipase, Application - Removal of oil stains

Match the following list of microbes and their importance -

1. (a) - (iii), (b) - (i), (c) - (iv), (d) - (ii)
2. (a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
3. (a) - (iv), (b) - (ii), (c) - (i), (d) - (iii)
4. (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

The guts of cow and buffalo possess

1. Cyanobacteria
2. Fucus sp.
3. Methanogens
4. Chlorella sp.

What gases are produced in anaerobic sludge digesters ?

1. Methane and CO2 only
2. Methane, Hydrogen Sulphide and O2
3. Methane, Hydrogen Sulphide and CO2
4. Hydrogen Sulphide and CO2