Question
Asked Nov 19, 2019
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What is the difference between inactivate  and closed Na+ channels?Explain how a salty flavor is transduced into an action potential. Describe each step in an action potential

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Expert Answer

Step 1

Sodium channels are the proteins found in the plasma membrane of a cell that forms an ions channel to permit the movement of sodium ions. These channels open after receiving a stimulus. Based on the type of stimulus received, they are classified into two types, voltage-gated and ligand-gated.

Step 2

Once excited, sodium channels can transduce an action potential in the cell. It can go through three different states, namely, inactive, active and resting state.

The active state is the excited state that is capable of transducing the action potential. The inactive and resting phase may seem same, but they aren’t actually. The resting phase do not permit movement of ions through it, but it is capable of getting triggered and transformed into active state. The inactive state also does not allow flow of ions but has a different conformation that cannot get stimulated before a certain period of time.

Step 3

Taste buds are present on apical surface of microvilli present in the cells that senses taste. The signal of a taste is transduced by the ion channels present on the membranes on th...

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