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Chapter 11

Question:

Lipid-soluble signal molecules, such as testosterone, cross the membranes of all cells butaffect only target cells because

A)only target cells retain the appropriate DNA segments.

B) intracellular receptors are present only in target cells.

C) most cells lack the Y chromosome required.

D) only target cells possess the cytosolic enzymes that transduce the testosterone.

E) only in target cells is testosterone able to initiate the phosphorylation cascade leading toactivated transcription factor.



Answer:

B) intracellular receptors are present only in target cells.



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Last update by mayur on 04/07/2014
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Chapter 11
Chapter 11
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Question: Lipid-soluble signal molecules, such as testosterone, cross the membranes of all cells butaffect only target cells because A)only target cells retain the appropriate DNA segments. B) intracellular receptors are present only in target cells. C) most cells lack the Y chromosome required. D) only target cells possess the cytosolic enzymes that transduce the testosterone. E) only in target cells is testosterone able to initiate the phosphorylation cascade leading toactivated transcription factor.
Answer: B) intracellular receptors are present only in target cells.