Which of the following are characteristics of a chemical synapse? Choose all that apply. (2 points) A. Release of neurotransmitter by exocytosis from the presynaptic neuron B. Receptors for the neurotransmitter are present on the postsynaptic neuron C. The presynaptic neuron and the postsynaptic neuron are physically connected together D. The synaptic cleft is a space separating the presynaptic and postsynaptic neurons
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Release of neurotransmitter by exocytosis from the presynaptic neuron - This is true. Chemical synapses involve the release of neurotransmitters from the presynaptic neuron into the synaptic cleft. B. Receptors for the neurotransmitter are present on the Show more…
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After a neurotransmitter has served its purpose, it is removed from the synapse through a. diffusion away from the synapse b. degradation by an enzyme c. reuptake into the presynaptic neuron B or C A, B or C Which of the following is not a characteristic of chemical synapses? A. neurotransmitter packaged in vesicles in presynaptic neuron B. neurotransmitter refractory period C. neurotransmitter elimination or uptake D. receptor proteins E. synaptic cleft
Chemical synapse is a multiple-step process in which neurotransmitters undergo transfer and binding to different parts of the cell. What happens when a neurotransmitter binds to ligand-gated ion channels? a. The ligand-gated ion channels open. b. The presynaptic neuron reuptakes the neurotransmitter. c. The neurotransmitter diffuses away from the synapse. d. The neurotransmitter is enzymatically degraded.
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