Cell Signalling and Transduction
What is the name of the protein signaling molecule that alters glucose uptake, and where would its receptors be located?

Insulin; many different cell types that use glucose for fuel
NGF; the nerves involved in simple reflexes
PDGF; the blood
Insulin; beta cells of the pancreas

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Cell Signalling and Transduction
When a __________ reaches its __________ , there is a specific means of receiving it and acting on the message. This task is the responsibility of specialized proteins called __________ .

signaling molecule; receptor; G proteins
signaling molecule; target cell; receptors
signaling molecule; target cell; G proteins
kinase; receptor; proteases

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Cell Signalling and Transduction
cAMP and cGMP are derived from

None of these
ATP and GTP by the actions of guanylate cyclase and adenylate cyclase respectively
ATP and GTP by the actions of adenylate cyclase and guanylate cyclase respectively
GTP and ATP by the actions of adenylate cyclase and guanylate cyclase respectively

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Cell Signalling and Transduction
Cell signaling can be classified into

None of these
two distinct types based on the distance over which the signaling molecules act
three distinct types based on the signaling molecules
three distinct types based on the distance over which the signaling molecules act

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