Which one of the following exemplifies exocytosis? Steps 1 and 5 Step 2 Step 3 Steps 2
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Which one of the following exemplifies exocytosis?
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1. On the plasma membrane of the signaling neuron, voltage-gated Ca2* channels open. Ca2* ions diffuse into the cell. 2. In the signaling neuron, secretory vesicles fuse with the plasma membrane, releasing neurotransmitters. 3. Neurotransmitters diffuse over to the receiving neuron. 4. Gated ion channels on the receiving neuron open in response to binding neurotransmitters, allowing ions to flow into the receiving neuron. 5. Neurotransmitters are transported back through the plasma membrane through membrane proteins. Proton pumps in the secretory vesicle membrane use ATP to move protons into the vesicle. A proton is allowed out of the vesicle in exchange for a neurotransmitter being allowed into the vesicle. 1. On the plasma membrane of the signaling neuron, voltage-gated Ca2* channels open. Ca2* ions diffuse into the cell. 2. In the signaling neuron, secretory vesicles fuse with the plasma membrane, releasing neurotransmitters. 3. Neurotransmitters diffuse over to the receiving neuron. 4. Gated ion channels on the receiving neuron open in response to binding neurotransmitters, allowing ions to flow into the receiving neuron. 5. Neurotransmitters are transported back through the plasma membrane through membrane proteins. Proton pumps in the secretory vesicle membrane use ATP to move protons into the vesicle. A proton is allowed out of the vesicle in exchange for a neurotransmitter being allowed into the vesicle.
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Step 2 Exocytosis is the cells secretory mechanism in which large quantities off molecules ... View the full answer
Related Book For
Accounting concepts and applications
ISBN: 978-0538745482
11th Edition
Authors: Albrecht Stice, Stice Swain
Posted Date:
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