A function of the second messenger IP3 is to ... a) bind to and activate protein kinase A. b) bind to and open ligand-gated Ca2+ channels on the ER membrane. c) activate transcription factors. d) activate other membrane-bound relay molecules. e) convert ATP to cyclic AMP.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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A function of the second messenger IP3 is to...
a) bind to and activate protein kinase A.
b) bind to and open ligand-gated Ca2+ channels on the ER membrane.
c) activate transcription factors.
d) activate other membrane-bound relay molecules.
O e) convert ATP to cyclic AMP.
Transcribed Image Text:A function of the second messenger IP3 is to... a) bind to and activate protein kinase A. b) bind to and open ligand-gated Ca2+ channels on the ER membrane. c) activate transcription factors. d) activate other membrane-bound relay molecules. O e) convert ATP to cyclic AMP.
Receptor tyrosine kinases (RTKS) ...
a) often mediate pathways involving cell growth and differentiation.
O b) activate the small monomeric G-protein Ras.
C) typically dimerize upon ligand binding.
d) a and c
O e) a, b and c
Transcribed Image Text:Receptor tyrosine kinases (RTKS) ... a) often mediate pathways involving cell growth and differentiation. O b) activate the small monomeric G-protein Ras. C) typically dimerize upon ligand binding. d) a and c O e) a, b and c
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