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A cheese maker claims… (Class 12 Biology SQP 2025-26, Q20A)

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BiologyCBSE Class 12 · Sample paper, session 2025-26 · 2 marks · Very short answer

CBSE Class 12 Biology sample paper 2025-26: question 20(A)

From the official CBSE sample question paper for 2025-26, section B, question 20(A), for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q20(A) · 2 marks · Very short answerCompetency-basedMicrobes in Human Welfare

A cheese maker claims to be a biotechnologist. How will you support the same?

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2025-26.

Hints

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

Hint 1

Recall the broad definition of biotechnology.

Hint 2

Which organisms ferment milk into cheese?

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. Biotechnology means using living organisms, or their products or enzymes, to make products and processes useful to humans. Anyone who does this with technology can be called a biotechnologist.

    1 mark

  2. A cheese maker uses microbes such as lactic acid bacteria and fungi (e.g., Propionibacterium shermanii for Swiss cheese, Penicillium for Roquefort) to ferment milk into cheese commercially. So his claim is justified.

    1 mark

Answer: Yes – he uses living microbes (bacteria, fungi) to produce cheese commercially, which fits the definition of biotechnology.

Where the marks are

  • Defines a biotechnologist as one using organisms or their products with technology (1 mark)
  • Links cheese making to the use of microbes for commercial production (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 paperSample paper 2025-26: 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.