Why do many chemical signals that bind to intracellular receptors take longer to show their response than chemical signals that bind to membrane-bound receptors?
A) Opening ion channels in the membrane can take a long time.
B) Intracellular receptor responses frequently involve synthesis of new mRNA and proteins.
C) It takes longer for the signal molecules to reach the receptors.
D) The signal molecules are frequently broken down in the membrane before they get to the receptors in the cytoplasm.
E) It takes longer for the signal molecules to reach the receptors and the signal molecules are frequently broken down in the membrane before they get to the receptors in the cytoplasm are correct.
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