Action potentials are generated by ion movements through
A. chemically regulated gates.
B. active ion pumps.
C. leakage ion channels.
D. voltage-regulated gates.
Answer: D
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Indicate whether the statement is true or false
Cells from a woman with Turner syndrome have
A) only one X chromosome. B) one X and two Y chromosomes. C) no sex chromosomes. D) an extra X chromosome.
Identify the type of synapse that includes a presynaptic cell, synaptic cleft, and postsynaptic cell.
A. Direct B. Electrical C. Neurotransmitter D. Chemical E. Indirect