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Monascus purpureus is a yeast… (Class 12 Biology 2026, Q7)

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BiologyCBSE Class 12 · Board exam 2026, set 57/5/1 · 1 mark · MCQ

CBSE Class 12 Biology 2026: question 7

Set in the CBSE Class 12 board exam of 2026, paper 57/5/1, section A, question 7, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q7 · 1 mark · MCQMicrobes in Human Welfare

Monascus purpureus is a yeast used commercially in the production of which one of the following ?

  1. (A)Ethanol
  2. (B)Streptokinase
  3. (C)Citric acid
  4. (D)Statins

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 57/5/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

This product is a blood-cholesterol-lowering agent.

Hint 2

It acts as a competitive inhibitor of a cholesterol-synthesising enzyme.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Monascus purpureus produces statins.

    ½ mark

  2. Statins lower blood cholesterol by competitively inhibiting the enzyme that synthesises cholesterol. The answer is option (D).

    ½ mark

Answer: (D) Statins

Where the marks are

  • Chooses (D) Statins (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Microbes in Human Welfare, one at a time, marked against the answer key and marking points.Back to the full paper2026 board paper, set 57/5/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.