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Home Q & A Board Biology-Related Homework Help General Biology
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tyressjones tyressjones
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7 years ago
When the hormone epinephrine binds to receptors on the surface of a heart muscle cell, a new molecule, called cyclic AMP, is produced. Cyclic AMP then causes the heart muscle cells to contract, increasing blood flow throughout the body. In this example, cyclic AMP is acting as a(n)
A) second messenger.
B) energy carrier.
C) intercellular enzyme.
D) target cell.
E) hormone.
Textbook 
Biology: Life on Earth

Biology: Life on Earth


Edition: 10th
Authors:
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kont24kont24
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tyressjones Author
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7 years ago
Exactly what I needed
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