KC+CET PYQs for Microbes in Human Welfare with Solutions: Practice KCET Previous Year Questions

Updated on - Feb 16, 2026

Microbes in Human Welfare is an important topic in the Biology section in KCET exam. Practising this topic will increase your score overall and make your conceptual grip on KCET exam stronger.

This article gives you a full set of KCET PYQs for Microbes in Human Welfare with explanations for effective preparation. Practice of KCET Biology PYQs including Microbes in Human Welfare questions regularly will improve accuracy, speed, and confidence in the KCET 2026 exam.

KCET PYQs for Microbes in Human Welfare with Solutions

1.
Match the following bacteria of List I with their commercial products of List II: Select the code for the correct answer from the options given below :
- 1 ? III , 2 ? II, 3 ? IV , 4 ? I
- 1 ? I , 2 ? IV, 3 ? III , 4 ? II
- 1 ? III , 2 ? IV, 3 ? II , 4 ? I
- 1 ? III , 2 ? IV, 3 ? I , 4 ? II
View Solution
2.
The large holes in ‘Swiss-Cheese’ are made by a
- Fungus that releases a lot of gases during metabolic activities
- Machine
- Bacterium that produces methane gas
- Bacterium producing a large amount of CO₂
View Solution
3.
'Roquefort cheese' is ripened by using a__________
- Fungus
- Cyanobacteria
- Type of yeast
- Bacterium
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4.
Ruminant animals can digest cellulose in their food, where as human beings are unable to do so. This is because
- Cellulose reduces the bulk of food
- Methanogens are absent in human gut
- Methanogens re present in human gut
- Cellulose is a complex sugar b
View Solution
5.
Which among the following products of microbes is not obtained from fungi ?
- Penicillin
- Statins
- Swiss cheese
- Cyclosporin-A
View Solution
6.
The technology of biogas production was developed in India due to the efforts of
- KVIC
- IARI
- CDRI
- Both A and B
View Solution
7.
Ernest chain and Howard Florey's contribution was
- Establishing the potential of penicillin as an effective antibiotic
- Discovery of Streptokinase
- Production of genetically engineered insulin
- Discovery of DNA sequence
View Solution
8.
The microorganisms involved in floe formation during sewage treatment are
- Anaerobic bacteria and fungus
- Aerobic bacteria and fungus
- Autotrophic bacteria and yeast
- Fungus and algae
View Solution
9.
Match the following :
Column I Column II
i. Cyclosporin - A a. Clot busters
ii. Streptokinase b. Antibiotic
iii. Statins c. Immuno supressive agent
iv. Penicillin d. Blood cholesterol lowering agent
- i-c, ii-a, iii-d, iv-b
- i-c, ii-d, iii-a, iv-b
- i-a, ii-b, iii-c, iv-d
- i-a, ii-b, iii-d, iv-c
View Solution
10.
The first antibiotic was discovered by ..........
- R. Koch
- Louis Pasteur
- A. Fleming
- W. Flemming
View Solution
11.
A micro-organism, when viewed under a compound microscope with an objective lens of 40 X and an eye piece of 10 X magnification measured 4000 � in length. The same microorganism when observed under a dissection microscope with a lens of 10 X magnification, would measure........
- 100 �
- 40 �
- 400 �
- 10 �
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Column I		Column II
i.	Cyclosporin - A	a.	Clot busters
ii.	Streptokinase	b.	Antibiotic
iii.	Statins	c.	Immuno supressive agent
iv.	Penicillin	d.	Blood cholesterol lowering agent

KCET PYQs for Microbes in Human Welfare with Solutions

1.Match the following bacteria of List I with their commercial products of List II: Select the code for the correct answer from the options given below :

2.The large holes in ‘Swiss-Cheese’ are made by a

3.'Roquefort cheese' is ripened by using a__________

4.Ruminant animals can digest cellulose in their food, where as human beings are unable to do so. This is because

5.Which among the following products of microbes is not obtained from fungi ?

6.The technology of biogas production was developed in India due to the efforts of

7.Ernest chain and Howard Florey's contribution was

8.The microorganisms involved in floe formation during sewage treatment are

9.Match the following :Column IColumn IIi.Cyclosporin - Aa.Clot bustersii.Streptokinaseb.Antibioticiii.Statinsc.Immuno supressive agentiv.Penicillind.Blood cholesterol lowering agent

10.The first antibiotic was discovered by ..........

11.A micro-organism, when viewed under a compound microscope with an objective lens of 40 X and an eye piece of 10 X magnification measured 4000 � in length. The same microorganism when observed under a dissection microscope with a lens of 10 X magnification, would measure........

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1.
Match the following bacteria of List I with their commercial products of List II: Select the code for the correct answer from the options given below :

2.
The large holes in ‘Swiss-Cheese’ are made by a

3.
'Roquefort cheese' is ripened by using a__________

4.
Ruminant animals can digest cellulose in their food, where as human beings are unable to do so. This is because

5.
Which among the following products of microbes is not obtained from fungi ?

6.
The technology of biogas production was developed in India due to the efforts of

7.
Ernest chain and Howard Florey's contribution was

8.
The microorganisms involved in floe formation during sewage treatment are

9.
Match the following :
Column I Column II
i. Cyclosporin - A a. Clot busters
ii. Streptokinase b. Antibiotic
iii. Statins c. Immuno supressive agent
iv. Penicillin d. Blood cholesterol lowering agent

10.
The first antibiotic was discovered by ..........

11.
A micro-organism, when viewed under a compound microscope with an objective lens of 40 X and an eye piece of 10 X magnification measured 4000 � in length. The same microorganism when observed under a dissection microscope with a lens of 10 X magnification, would measure........