NEET 2019 · Class 11

Chemical Coordination and Integration

How does steroid hormone influence the cellular activities?

  1. (A)Changing the permeability of the cell membrane.
  2. (B)Binding to DNA and forming a gene-hormone complex.
  3. (C)Activating cyclic AMP located on the cell membrane.
  4. (D)Using aquaporin channels as second messenger.

The NCERT line that answers it

Verbatim line

Hormones which interact with intracellular receptors (e.g., steroid hormones, iodothyronines, etc.) mostly regulate gene expression or chromosome function by the interaction of hormone-receptor complex with the genome.

Chapter
Chemical Coordination and Integration
Section
19.4 MECHANISM OF HORMONE ACTION
Page
9
Words matched
27 of 27

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that steroid hormones interact with intracellular receptors to regulate gene expression through hormone-receptor complex interaction with the genome, which directly matches option B's description of binding to DNA and forming a gene-hormone complex.

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