All of the following statements apply to G proteins EXCEPT ____
a. G proteins transmit a signal from the cell surface to the interior of the cell
b. all G proteins have a similar structure
c. G proteins do not use a second messenger but transmit the signal directly to the nucleus
d. G proteins act to amplify the signal creating a cascade response in the cell
e. G proteins are the target of toxins released by some pathogenic bacteria
C
Biology & Microbiology
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