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

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Cell Signalling and Transduction
Two key organizing principles for large multicellular organisms are

simple nerve reflexes and cell specialization
cell specialization and communication between cells
prokaryotic cell structure and cell specialization
communication between cells and simple nerve reflexes

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Cell Signalling and Transduction
Cell signaling can be classified into

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

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Cell Signalling and Transduction
If a disease of the blood vessels caused the endothelial cells of the vessel to die, what effect would that have on the cellular activities associated with vasodilation?

Nitric oxide would no longer be produced
It would be more difficult to increase blood flow and reduce blood pressure
Smooth muscle cells could not be made to relax
All of these

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