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Indicate Whether the Statements Below Are TRUE or FALSE

Question 51

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Indicate whether the statements below are TRUE or FALSE. If a statement is false, explain why it is false.

Premises:

Responses:

Gap junctions are large pores that connect the cytosol to the extracellular space.

False

The ion selectivity of a channel depends solely on the charge of the amino acids lining the pore inside the channel.

True

Most ion channels are gated, which allows them to open and close in response to a specific stimulus, rather than allowing the constant, unregulated flow of ions.

Aquaporin channels are found in the plasma membrane, and allow the rapid passage of water molecules and small ions in and out of cells.

Premises:

Gap junctions are large pores that connect the cytosol to the extracellular space.

The ion selectivity of a channel depends solely on the charge of the amino acids lining the pore inside the channel.

Most ion channels are gated, which allows them to open and close in response to a specific stimulus, rather than allowing the constant, unregulated flow of ions.

Aquaporin channels are found in the plasma membrane, and allow the rapid passage of water molecules and small ions in and out of cells.

Responses:

False

True

Correct Answer:

Premises:

Responses:

Gap junctions are large pores that connect the cytosol to the extracellular space.

The ion selectivity of a channel depends solely on the charge of the amino acids lining the pore inside the channel.

Most ion channels are gated, which allows them to open and close in response to a specific stimulus, rather than allowing the constant, unregulated flow of ions.

Aquaporin channels are found in the plasma membrane, and allow the rapid passage of water molecules and small ions in and out of cells.

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