18. In muscle, the first event in glycogen breakdown after a hormone binding is__________. (A) cytoplasmic cAMP levels rise (B) protein kinase A phosphorylates phorsporylase kinase (C) adenylate cyclase is activated (D) protein kinase A is activated (E) Gs protein is activated

18. In muscle, the first event in glycogen breakdown after a hormone binding is__________.
(A) cytoplasmic cAMP levels rise
(B) protein kinase A phosphorylates phorsporylase kinase
(C) adenylate cyclase is activated
(D) protein kinase A is activated
(E) Gs protein is activated

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統計： A(0), B(2), C(0), D(0), E(2) #3853323

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2026/04/01

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肝醣代謝 (Glycogen Metab...

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13. Suppose a person begins breathing very rapidly while resting (hyperventilating), which of the following best describes how homeostasis is restored? (A) Rapid breathing decreases blood CO2 levels, thereby raising blood pH. The frontal cortex detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate. (B) Rapid breathing increases blood CO2 levels, thereby causing the blood pH to drop. The hypothalamus detects the change and decreases stimulation of the rib muscles and the diaphragm, thereby reducing the breathing rate. (C) Rapid breathing decreases blood CO2 levels, thereby raising blood pH. The hypothalamus detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate. (D) Rapid breathing increases blood CO2 levels, thereby causing the blood pH to drop. The medulla oblongata detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate. (E) Rapid breathing decreases blood CO2 levels, thereby raising blood pH. The medulla oblongata detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate.

18. In muscle, the first event in glycogen breakdown after a hormone binding is__________.
(A) cytoplasmic cAMP levels rise
(B) protein kinase A phosphorylates phorsporylase kinase
(C) adenylate cyclase is activated
(D) protein kinase A is activated
(E) Gs protein is activated

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