Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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Which
of the following statements about the resting potential of a neuron is true? a. | There are many
times more sodium ions outside the neuron than inside. | b. | Sodium ions are
in balance inside and outside the neuron. | c. | There are fewer potassium ions inside the neuron than
outside. | d. | There are equal amounts of potassium and sodium ions inside and
outside the neuron. | | |
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2.
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When
a neuron is at rest, a. | sodium ions are most concentrated inside the
cell. | b. | potassium ions are most concentrated inside the
cell. | c. | the outside of the cell is negatively
charged. | d. | All of the above | | |
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3.
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Refer
to the illustration above. The effect of the neurotransmitter might be prolonged by the presence of
molecule
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4.
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Information is carried from the central nervous system to a muscle or gland
by a. | sensory
neurons. | c. | motor
neurons. | b. | sensory receptors. | d. | None of the above | | | | |
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5.
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Ears a. | function to detect sounds. | c. | detect only internal stimuli. | b. | help maintain
your balance. | d. | Both (a) and
(b) | | | | |
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