Microbes in Human Welfare

Curdling of milk in small intestine occurs due to the action of

• rennin

• erypsine

• trypsin

• chymotrypsin

Chloromycetin is obtained from

• Streptomyces venezuelae

• Streptomyces rimosus

• Bacillus subtilis

• Clostridium botulinum

Which of the following pesticides is an acetylcholinesterase inhibitor?

• Aldrin

• BHC

• Endosulfan

• Malathion

Assertion : Yeasts such as Saccharomyces cerevisiae are used in baking industry.

Reason : Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.

• If both Assertion and Reason are true and the reason is the correct explanation of the assertion

• If both Assertion and Reason are true but the reason is not the correct explanation of the assertion

• If Assertion is true statement but Reason is false

• If both Assertion and Reason are false statements

Which of the following micro-organism is used for conversion of milk into curd?

• Xanthomonas citri

• Bacillus megatherium

• Acetobacter aceti

• None of the above

The pesticide used as preventive measure in buildings is :

• aldrin

• dieldrin

• endrin

• DDT

Which of the following is the product of glucose fermentation by yeast?

• C₆H₁₂O₆

• C₂H₅OH

• (C₆H₁₀O₅)_n

• CH₂OH

Yeast is used in the production of :

• acetic acid

• citric acid

• ethyl alcohol

• curd

Streptomycin was isolated first time by :

• A. Flemming

• Robert Koch

• N. Borlaug

• S. Waksman

Continued consumption of a diet rich in butter, red meat and eggs for a long period may lead to:

• vitamin toxicity

• kidney stones

• hypercholesterolemia

• urine laden with ketone bodies