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

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

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

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Cell Signalling and Transduction
Cell signaling can be classified into

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

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