5.8.1 The Lac operon

NCERT Class 12 Biology, section 5.8.1 · Shishya practice, NCERT-based

6 questions, picked at random. Each is Shishya's own, written from this part of the NCERT chapter and answer-checked — not NCERT's text and not a NEET previous-year question. Read the chapter first; the explanation shows after each answer.

Question 1 of 6

Medium

Why must a very low level of lac operon expression be present in the cell at all times?

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