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  9. Q228

SSC Stenographer Grade C & D 2025 · Question 228 of 389

In the lac operon model, what is the primary role of the allolactose molecule?

  1. AIt functions as an inducer, binding to the repressor protein and inactivating it.Correct
  2. BIt acts as a corepressor, binding with the repressor protein.
  3. CIt binds to the promoter to initiate transcription.
  4. DIt directly codes for the enzymes involved in lactose metabolism.

Answer: A. It functions as an inducer, binding to the repressor protein and inactivating it.

Official answer key verified. Detailed explanation coming soon.

Source: SSC Stenographer 2025 Question Paper (07-Aug-2025 Shift-3) · reliable-secondary

← Q227View full paper (389 questions)Q229 →

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