Test Details

Microbes in Human Welfare

Test

Jan 29, 3:00 PM

180 minutes

Jan 29, 8:00 PM

70.0 marks

MCQ

34 questions

ANANDA SONAWANE

I have four year of teaching experience in CBSE School

Class Details

Biology

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Question Text

Question 4 :
What is the process called due to which idli and dosa makes it fluffy and soft?

Question 5 :
Identify two correct statements from the following. (i) Rennin is industrially produced by Mucor pusilus (ii) Streptokinase is industrially produced by Pseudomonas pudica (iii) Alkaline serine protease is produced by Bacillus licheniformis (iv) DNA polymerase is produced by Trichoderma reesi.

Question 8 :
A compound produced by an organism that inhibits the growth of another micro-organism is called

Question 10 :
A sewage treatment process in which a part of decomposer bacteria present in the wastes is recycled into the starting of the process is called as:

Question 12 :
Assertion: Amoxicillin is a broad spectrum antibiotic. Reason: It is derived from penicillin G.

Question 15 :
Assertion: Saccharomyces cerevisiae produces acetic acid. Reason: Trichoderma polysporum produces blood cholesterol lowering agent.

Question 18 :
Assertion: Acetic acid production involves both aerobic  and anaerobic processes. Reason: Production of alcohol from glucose is an aerobic process and production of acetic acid from alcohol is an anaerobic process.

Question 19 :
Critric acid used in production of beverages, toffees, chocolates is by fermentation of ______ by aspergillus niger.

Question 20 :
Which of the following is used in the preparation of soy sauce?

Question 25 :
Which of the following is mainly produced by the activity ofanaerobic bacteria on sewage?

Question 26 :
Which one is the most important role of microorganisms for the well being of humans?

Question 27 :
Which of the following antibiotics is not correctly matched with the source from which it is obtained?

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