What happens when an action potential arrives at an axon terminal?
A. Membrane voltages stimulate the axon.
B. Sodium ions are pumped out of the cell.
C. A neurotransmitter builds up so it can be used again.
D. The action potential causes an influx of phosphorous ions.
E. Chemicals relay the message at a synapse.
Answer: E
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Which of the following is suggested by the fact that all eukaryotes have either functional mitochondria or mitochondria-like organelles?
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The fovea is the area at the back of the eye where the optic nerve exits.
a. true b. false
The theory that eating is controlled by deviations from a hypothetical blood glucose set point
What will be an ideal response?