NEET · Biology · STD 12 - 8. microbes in human welfare

What is the reason behind production of large holes in 'Swiss Cheese' ?

A The production of large amount of \(CO _2\) by Propionibacterium sharmanii
B The production of large amount of \(CO _2\) by Clostridium butylicum
C The production of large amount of \(CO _2\) and \(H _2\) by lactic acid bacteria called Lactobacillus
D The production of large amount of \(CO _2\) and \(H _2\) by Trichoderma polysporum

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Answer & Solution

Correct Answer

(A) The production of large amount of \(CO _2\) by Propionibacterium sharmanii

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Detailed explanation

(A) The production of large amount of \(CO _2\) by Propionibacterium sharmanii
The large holes in 'Swiss cheese' are due to the production of a large amount of \(CO _2\) by a bacterium named Propionibacterium sharmanii.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Match the following columns and select the correct option

Column \(I\)	Column \(II\)
(\(a\)) Smooth endoplasmic reticulum	(\(i\)) Protein synthesis
(\(b\)) Rough endoplasmic reticulum	(\(ii\)) Lipid synthesis
(\(c\)) Golgi complex	(\(iii\)) Glycosylation
(\(d\)) Centriole	(\(iv\)) Spindle formation

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