Carbohydrate
Which of the following is carried out when cAMP functions as a second messenger?

Acts second in importance to AMP
Activates the cAMP-dependent protein kinase
Activates all cytosolic protein kinases
Acts outside the cell to influence cellular processes

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Carbohydrate
The multistep pathways of metabolism are efficient because they

use the same enzyme for all of the substrates in the pathway
spread the enzymes for a pathway into several different organelles
use the same substrate for all of the enzymes in the pathway
locate all of the enzymes for a pathway in the same place within the cell

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