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Inositol Trisphosphate (IP3) Is Released into the Cytoplasm When Phosphatidyl

Question 97

Multiple Choice

Inositol trisphosphate (IP3) is released into the cytoplasm when phosphatidyl inositol-bisphosphate (PIP2) is hydrolyzed.IP3 is one type of molecule that can directly


A) open Ca2+ channels and increase cytosolic calcium.
B) close Ca2+ channels and deplete intracellular calcium.
C) stimulate G protein activation of phospholipase.
D) activate cyclic AMP.
E) stimulate gene expression.

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