Lipid-soluble signaling molecules, such as aldosterone, cross the membranes of all cells but affect only target cells because (A) only target cells retain the appropriate DNA segments. (B) intracellular receptors are present only in target cells. (C) only target cells have enzymes that break down aldosterone. (D) only in target cells is aldosterone able to initiate the phosphorylation cascade that turns genes on.

          Lipid-soluble signaling molecules, such as aldosterone,
cross the membranes of all cells but affect only target cells
because
(A) only target cells retain the appropriate DNA segments.
(B) intracellular receptors are present only in target cells.
(C) only target cells have enzymes that break down
aldosterone.
(D) only in target cells is aldosterone able to initiate the
phosphorylation cascade that turns genes on.

Added by Scott R.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Bryan Valdivia

10/15/2021

Step 1

However, they only affect target cells. This is not because only target cells retain the appropriate DNA segments (A) - all cells in an organism share the same DNA. It's also not because only target cells have enzymes that break down aldosterone (C) - while it's Show more…

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Lipid-soluble signaling molecules, such as aldosterone, cross the membranes of all cells but affect only target cells because (A) only target cells retain the appropriate DNA segments. (B) intracellular receptors are present only in target cells. (C) only target cells have enzymes that break down aldosterone. (D) only in target cells is aldosterone able to initiate the phosphorylation cascade that turns genes on.