Free Microbes In Human Welfare (Daily Quiz: 4) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

During sewage treatment, biogases are produced which include :

(a) hydrogen sulphide, methane, sulphur dioxide

(b) methane, oxygen, hydrogen sulphide

(c) hydrogen sulphide, nitrogen, methane

(d) methane, hydrogen sulphide, carbon dioxide

Question-2

Conversion of sugar into alcohol during fermentation is due to the direct action of

(a) micro-organisms

(b) temperature

(c) zymase

(d) concentration of sugar solution

Question-3

Which of the following bacteria is used for the production of butanol and acetone from starch ?

(a) Clostridium acetobutylicum

(b) Lactobacillus bulgaricus

(c) Streptococcus thermophilus

(d) Both (b) and (c)

Question-4

Match the following column of bacteria and their commercially important products.

Column I (Bacterium)	Column II (Product)
A. Aspergilus niger	1. Lactic acid
B. Acerobacter aceti	2. Butyric acid
C. Clostridium butylicum	3. Acetic acid
D. Lactobacillus	4. Citric acid

Codes:

(a) A-2; B-4; C-3; D-1

(b) A-2; B-3; C-4; D-1

(c) A-4; B-3; C-2; D-1

(d) A-4; B-1; C-3; D-2

Question-5

Match the following column of bioactive substances and their roles.

Column I (Bioactive Substance)	Column II (Role)
A. Statin	1. Removal of oil stains
B. Cyclosporin A	2. Removal of ciots from blood vessels
C. Streptokinase	3. Lowering of blood cholestero
D. Lipase	4. Immuno-suppressive agent

Choose the correct matchCodes:

(a) A-4; B-2; C-1; D-3

(b) A-2; B-3; C-1; D-4

(c) A-4; B-1; C-3; D-2

(d) A-1; B-2; C-3; D-4