作者sunset02417 (蒙面侠)
看板Grad-ProbAsk
标题[问题] 生化疑问??
时间Sat Mar 21 16:40:10 2009
1.
Glucagon activates liver phosphorylase via cAMP as its secondary messenger.
Muscle does the same with epinephrine stimulation. Why the cAMP has quite
different effects on liver and muscle glycolysis.
Explain detail.
2.
Use the skeletal muscle contraction system as a model for cellular
communication. Describe 6 common themes of cellular communication.
3.
Which of the following is NOT a step in the phosphoinositide cascade?
(a). hormone binds a cell surface receptor
(b). occupied receptor causes GTP-GDP exchange
(c).activated PLC cleaves PIP2 to DAG and IP3
(d). DAG binds a receptor in the endoplasmic reticulum, which releases Ca2+
and activates protein kinase C
(e). phosphorylation of cellular proteins by protein kinase C produces
cellular response
谢谢任何一个帮忙的高手!!!
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1F：→ iting1025:前两题找找课本就有了~第三题答案是(d)促Ca+2是IP3 03/21 22:06