AP Biology MCQ AP Biology Practice Questions A(n) ________ is an example of a signal molecule that can bind to an intracellular receptor and thereby cause a gene to be turned on or off.

A(n) ________ is an example of a signal molecule that can bind to an intracellular receptor and thereby cause a gene to be turned on or off.

Naim 01:52 AP Biology Practice Questions

A(n) ________ is an example of a signal molecule that can bind to an intracellular receptor and thereby cause a gene to be turned on or off.

A) ion
B) protein
C) carbohydrate
D) nucleic acid
E) steroid

Answer: E

AP Biology MCQ

A(n) ________ is an example of a signal molecule that can bind to an intracellular receptor and thereby cause a gene to be turned on or off.

A(n) ________ is an example of a signal molecule that can bind to an intracellular receptor and thereby cause a gene to be turned on or off.

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