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Questions Available: 23
Year: 2024
Topic: Microbes in Human Welfare
1.
Match List I with List II:

Choose the correct answer from the options given below:
(1).
A-III, B-I, C-IV, D-II
(2).
A-IV, B-I, C-III, D-II
(3).
A-III, B-I, C-II, D-IV
(4).
A-II, B-IV, C-III, D-I

Test
Solution
Year: 2021
Topic: Microbes in Human Welfare
2.
Which of the following is not an objective of Biofortification in crops?
(1).
Improve protein content
(2).
Improve resistance to diseases
(3).
Improve vitamin content
(4).
Improve micronutrient and mineral content

Test
Solution
Year: 2020
Topic: Microbes in Human Welfare
3.
Match the following columns and select the correctoption.
(1).
(a) - (ii), (b) - (i) (c) - (iv), (d) - (iii)
(2).
(a) - (i), (b) - (ii), (c) - (iv), (d) - (iii)
(3).
(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
(4).
(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)

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Solution
Year: 2019
Topic: Microbes in Human Welfare
4.
Match the following organisms with the products they produce :
(1).
(a) - (ii), (b) - (iv), (c) - (iii), (d) - (v)
(2).
(a) - (iii), (b) - (iv), (c) - (v), (d) - (i)
(3).
(a) - (ii), (b) - (i), (c) - (iii), (d) - (v)
(4).
(a) - (ii), (b) - (iv), (c) - (v), (d) - (iii)

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Solution
Year: 2025
Topic: Microbes in Human Welfare
5.
Which of the following is an example of non- distilled alcoholic bheverage produced by yeast?
(1).
Rum
(2).
Whisky
(3).
Brandy
(4).
Beer

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Solution
Year: 2025
Topic: Microbes in Human Welfare
6.
Which of the following microbes is NOT involved in the preparation of household products?
A. Aspergillus niger
B. Lactobacillus
C. Trichoderma polysporum
D. Saccharomyces cerevisiae
E. Propionibacterium sharmanii
Choose the correct answer from the options given below:
(1).
C and E only
(2).
A and B only
(3).
A and C only
(4).
C and D only

Test
Solution
Year: 2025
Topic: Microbes in Human Welfare
7.
Streptokinase produced by bacterium Streptococcus is used for
(1).
Removing clots from blood vessels
(2).
Curd production
(3).
Ethanol production
(4).
Liver disease treatment

Test
Solution
Year: 2023
Topic: Microbes in Human Welfare
8.
Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of
(1).
Amylase
(2).
Lipase
(3).
Dinitrogenase
(4).
Succinic dehydrogenase

Test
Solution
Year: 2022
Topic: Microbes in Human Welfare
9.
Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin
(1).
Trichoderma polysporum
(2).
Clostridium butylicum
(3).
Aspergillus niger
(4).
Streptococcus cerevisiae

Test
Solution
Year: 2021
Topic: Microbes in Human Welfare
10.
Match List-I with List-II.

Choose the correct answer from the options given below.
(1).
(a) - (iv), (b) - (i), (c)- (iii), (d) - (ii)
(2).
(a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
(3).
(a) - (i), (b) - (ii), (c) - (iv), (d) - (iii)
(4).
(a) - (ii), (b) - (iii), (c) -(i), (d) - (iv)

Test
Solution
Year: 2021
Topic: Microbes in Human Welfare
11.
Match List-I with List-II.

Choose the correct answer from the options given below.
(1).
(a) - (iii), (b) - (i), (c) - (iv), (d) - (ii)
(2).
(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
(3).
(a) - (ii), (b) - (iii), (c) - (i), (d) - (iv)
(4).
(a) -(iv), (b) - (ii), (c) -(i), (d) - (iii)

Test
Solution
Year: 2021
Topic: Microbes in Human Welfare
12.
During the process of gene amplification using PCR, if a very high temperature is not maintained in the beginning, then which of the following steps of PCR will be affected first?
(1).
Annealing
(2).
Extension
(3).
Denaturation
(4).
Ligation

Test
Solution
Year: 2021
Topic: Microbes in Human Welfare
13.
A specific recognition sequence identified by endonucleases to make cuts at specific positions within the DNA is:
(1).
Degenerate primer sequence
(2).
Okazaki sequences
(3).
Palindromic Nucleotide sequences
(4).
Poly (A) tail sequences

Test
Solution
Year: 2020
Topic: Microbes in Human Welfare
14.
The process of growth is maximum during:
(1).
Lag phase
(2).
Senescence
(3).
Dormancy
(4).
Log phase

Test
Solution
Year: 2020
Topic: Microbes in Human Welfare
15.
Which of the following is correct about viroids ?
(1).
They have free RNA without protein coat. .
(2).
They have DNA with protein coat.
(3).
They have free DNA without protein coat.
(4).
They have RNA with protein coat

Test
Solution
Year: 2020
Topic: Microbes in Human Welfare
16.
The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are:
(1).
Nitrate alone
(2).
Ammonia and oxygen
(3).
Ammonia and hydrogen
(4).
Ammonia alone

Test
Solution
Year: 2019
Topic: Microbes in Human Welfare
17.
Select the correct group of biocontrol agents
(1).
Trichoderma, Baculovirus, Bacillus thuringiensis
(2).
Oscillatoria, Rhizobium, Trichoderma
(3).
Nostoc, Azospirillium, Nucleopolyhe-drovirus
(4).
Bacillus thuringiensis, Tobacco mosaic virus, Aphids

Test
Solution
Year: 2019
Topic: Microbes in Human Welfare
18.
Which of the following can be used as a biocontrol agent in the treatment of plant disease ?
(1).
Chlorella
(2).
Anabaena
(3).
Lactobacillus
(4).
Trichoderma

Test
Solution
Year: 2019
Topic: Microbes in Human Welfare
19.
Which of the following is a commercial blood cholesterol lowering agents ?
(1).
Statin
(2).
Streptokinase
(3).
Lipases
(4).
Cyclosporin A

Test
Solution
Year: 2019
Topic: Microbes in Human Welfare
20.
Which one of the following equipments is essentially required for growing microbes on a large scale, for industrial production of enzymes ?
(1).
Sludge digester
(2).
Industrial oven
(3).
Bioreactor
(4).
BOD incubator

Test
Solution
Year: 2018
Topic: Microbes in Human Welfare
21.
Conversion of milk to curd improves its nutritional value by increasing the amount of
(1).
vitamin E
(2).
vitamin B12
(3).
vitamin A
(4).
vitamin D

Test
Solution
Year: 2017
Topic: Microbes in Human Welfare
22.
Which of the following is correctly matched for the product produced by them ?
(1).
Saccharomyces cerevisiae : Ethanol
(2).
Acetobacter aceti : Antibiotics
(3).
Methanobacterium : Lactic acid
(4).
Penicillium notatum : Acetic acid

Test
Solution
Year: 2017
Topic: Microbes in Human Welfare
23.
Select the mismatch
(1).
Rhizobium – Alfalfa
(2).
Frankia – Alnus
(3).
Rhodospirillum – Mycorrhiza
(4).
Anabaena – Nitrogen fixer

Test
Solution