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TEA [102]
3 years ago
15

Tasting involves many different cell-signaling processes that ultimately generate nerve signals transduced by membrane depolariz

ation. Sweet tastes result in PIP2 hydrolysis, while salty tastes allow sodium ions to directly alter the membrane potential. What can you deduce about the signaling mechanisms for sweet and salty?
Biology
1 answer:
galina1969 [7]3 years ago
6 0

Answer:

We can deduce that:

1. Sodium ions directly enters the cells, indicating  the signal is transduced by an ion channel.

2. Sweet utilizes the GRCP signaling pathway, activating phospholipase C.

Explanation:

IN SALTY, the Sodium ion passes through dynamic various chambers that can be located on the apical membrane  of the taste buds.

Sweet utilizes GRCP signaling pathway va activation of phospholipase C in order to produce IP3 and DAG.

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Answer:

I, II, III

Explanation:

A threshold stimulus is a stimulus that is capable to produce a response in excitable tissues such as neurons and muscle fibers. At threshold potential, the outward movement of K+ and inward movement of Na+ become equal to each other. When the potential exceeds the threshold potential, more and more Na+ enter the cell to depolarize it and to allow the opening of Na+ channels. Therefore, to fire an action potential, the threshold must be exceeded.

Conduction of action potential is all or none phenomenon which means that either it occurs or it does not occur. As an impulse is passed by each successive part of an exon, it enters the refractory period during which there is no conduction of nerve impulse. It ensures the one-way conduction of impulse from the cell body to the axon terminal only.

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4 years ago
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coldgirl [10]

Answer:

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6 0
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