Based on the graph, the threshold voltage appears to be approximately
A) +60 mV.
B) +30 mV.
C) 0 mV.
D) ?30 mV.
E) ?60 mV.
Answer: E
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a. 0 b. 1/4 c. 1/2 d. 3/4 e. 1
Excitatory neurotransmitters encourage the generation of new electrical impulses by which one of the following?
A) stimulating saltatory conduction B) stimulating depolarization of postsynaptic neurons C) inhibiting postsynaptic neurons from repolarizing D) inhibiting presynaptic neurons from depolarizing E) stimulating depolarization of presynaptic neurons
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Indicate whether the statement is true or false
Corn, peppers, tomatoes, and cucumbers all contain seeds and are derived from the ovary of a flowering plant. Therefore, in scientific terms, they are
A) fruits. B) vegetables. C) sporophytes. D) seeds.