Why Do Enzymes That Lie Downstream of a Cell Surface

Q43: Phosphorylation of G protein-coupled receptors by GRK<br>A)

Q44: Cyclic AMP (cAMP) is synthesized from ATP

Q45: Notch is a cell-surface receptor protein that

Q46: Protein kinase A regulates glycogen metabolism by

Q47: The signaling molecule nitric oxide (NO) functions<br>A)

Q49: Signaling molecules that activate cell surface receptors

Q50: Many cancers arise as a result of

Q51: Integrins are transmembrane proteins that connect<br>A) the

Q52: The action effected by protein kinase A

Q53: SH2 domains are<br>A) protein domains that bind