A. Saccharomyces  cerevisiae	i. Production of immunosuppressive agents
B. Monascus purpureus	ii. Ripening of Swiss Cheese
C. Trichoderma polysporum	iii. Commercial production of ethanol
D. Propionibacterium sharrmanii	iv. Production of blood-cholesterol lowering agents

Codes

	A	B	C	D
1.	iii	iv	i	ii
2.	iv	iii	ii	i
3.	iv	ii	i	iii
4.	iii	i	iv	ii

What gases are produced in anaerobic sludge digesters?

1. Methane and CO₂ only

2. Methane, Hydrogen sulphide and CO₂

3. Methane, hydrogen sulphide and O₂

4. Hydrogen sulphide and CO₂

A good producer of citric acid is

1. Aspergillus

2. Pseudomonas

3. Clostridium

4. Saccharomyces

Monascus purpureus is a yeast used commercially in the production of

(1) ethanol

(2) streptokinase for removing clots from the blood vessels.

(3) citric acid

(4) blood cholesterol lowering statins.

A patient brought to a hospital with myocardial infarction is normally immediately given

1. penicillin                         

2. streptokinase

3. cyclosporin-A                   

4. statins

Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?

(1) Azotobacter

(2) Aspergillus

(3) Glomus

(4) Trichoderma

Yeast is used in the production of

(1) citric acid and lactic acid

(2) lipase and pectinase

(3) bread and beer

(4) cheese and butter

Which one of the following helps in absorption of phosphorus from soil by plants?

1. Rhizobium

2. Anabaena

3. Frankia

4. Glomus

Secondary sewage treatment is mainly a

(1) mechanical process

(2) chemical process

(3) biological process

(4) physical process

The most common substrate used in distilleries for the production of ethanol is

(1) soya meal

(2) ground gram

(3) molasses

(4) corn meal