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Neurotransmitter are synthesized in the cytoplasm of the cell vesicles for storage. Neurotransmitter use a antipode...

Neurotransmitter are synthesized in the cytoplasm of the cell vesicles for storage. Neurotransmitter use a antipode exchanger protein that is proton dependent. Based on the information above, it can be concluded that ————.

Hint: this transport is an example of secondary active transport.

A. The PH in the interior of the vesicle is higher than the cytoplasm.

B. The PH in the interior of the vesicle is lower than the cytoplasm.

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Answer #1

There are proton pumps located on the membrane of synaptic vesicles that generate gradient required for the transport of neurotransmitter. Most commonly found proton pump is V-ATPase that uses energy to transport protons in vesicle lowering the pH of vesicle. The antiporter uses the energy stored in the gradient of protons to transport neurotransmitter inside the vesicles. They transport protons out of the vesicle while moving neurotransmitter in the vesicle.

So option B (oh in the vesicle is lower than cytoplasm) is correct

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