Question

Insulin forms hormone receptor complex which regulate gene expression. Insulin is a peptide hormone which can easily pass cell membrane to interact with hormone-receptor complex.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

If assertion is true but reason is false

Answer 2

Insulin is a protein hormone which is water soluble. Water soluble hormones require extracellular receptors that generate second messengers for carrying out their activity. Insulin binds to its specific receptor molecule located on the plasma membrane to form the hormone receptor complex, $(HRC)$ which in turn generate second messengers that regulate cellular mechanism. Water soluble hormones (e.g., amino acid derivatives, peptides and protein hormones) do not enter the target cell.