Action potentials in contractile cardiac muscle cells
A. are much faster than action potentials in skeletal muscle.
B. have no plateau phase.
C. involve voltage-gated calcium ion channels.
D. have sodium ion channels that open and cause repolarization.
E. have all of these characteristics.
Ans: C. involve voltage-gated calcium ion channels.
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Explain why Mendel's work was groundbreaking
What will be an ideal response?
The goal of immunization is to ____
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GABA receptors play an essential role in neurotransmission in the central nervous system. In response to the appropriate signal, these receptors open up and allow Cl- to flow into the cell. Given this information, GABA receptors can be classified as a
A. Cl- pump. B. gated ion channel. C. symporter. D. gated carrier protein.