Campbell Biology in Focus
Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 37, Problem 5TYU

Which of the following is a direct result of depolarizing the presynaptic membrane of an axon terminal?

  1. A.    Voltage-gated calcium channels in the membrane open.
  2. B.     Synaptic vesicles fuse with the membrane.
  3. C.     Ligand-gated channels open, allowing neurotransmitters to enter the synaptic cleft.
  4. D.    An EPSP or IPSP is generated in the postsynaptic cell.
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Students have asked these similar questions
Which of the following is NOT an example of communication that happens from one neuron to another neuron? A. Endocrine signaling (ex. hormones secreted into the blood stream travel and bind to receptors on dstant cells). B. Retrograde neurotransmission (ex.the dendrite releases a neuroactive substance that binds to receptors on the axon terminal of a presynaptic neuron). C. Electrical communication via propagation of action potential from one node of ranvier to the next node of ranvier. D. Volume transmission (ex. neuropeptides diffuse away from the synapse and bind to receptors on adjacent cells) E. Electrical communication through gap junctions.
Charge from depolarization along the axon reaches the axon terminal, but there is a lack of neurotransmitter release. Which of the following would cause this? Group of answer choices A. Lack of Na+ in the synaptic cleft B. Lack of Ca2+ in the synaptic cleft C. Reduced amount of K+ at the axon terminal D. Lack of voltage-gated sodium channels in the axon terminal
Which of the following statements correctly describes the function of mitochondria found in axon terminals?   a. They synthesize enzymes, which are required to break down the neurotransmitters. b. They synthesize vesicles, which transport sodium and potassium ions across the synapse. c. They synthesize ATP, which is required for the production of neurotransmitters. d. They synthesize ATP, which is required to bond the axon terminal to the dendrites.
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