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Big holes in Swiss cheese are made by a:a. a machineb. a bacterium that produces methane gasc. a bacterium producing a large amount of carbon dioxided. a fungus that releases a lot of gases during its metabolic activities.
Big holes in Swiss cheese are made by a:
a. a machine

b. a bacterium that produces methane gas

c. a bacterium producing a large amount of carbon dioxide

d. a fungus that releases a lot of gases during its metabolic activities.
Biology | CBSE | Class 12 | Exercise 1 | Microbes in Human Welfare | NCERT Exemplar
Big holes in Swiss cheese are made by a:
a. a machine

b. a bacterium that produces methane gas

c. a bacterium producing a large amount of carbon dioxide

d. a fungus that releases a lot of gases during its metabolic activities.

Solution:

Option (c) is the answer.

When Propionibacterium shermani consumes lactic acid, it produces carbon dioxide and bubbles. Big holes appear in the Swiss cheese as a result of the bubbles.

As a result, the correct answer is ‘a bacterium that produces a lot of carbon dioxide.’

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