Question

Which of the following statements regarding gated channels is false?

1) Gated channels allow the passage of ions or molecules across a cell membrane.
2) Gated channels can be opened or closed in response to specific signals or conditions.
3) Gated channels are always open and allow the free flow of ions or molecules.
4) Gated channels play a crucial role in regulating the movement of substances in and out of cells.

Answer 1

Statement 3 asserting that gated channels are always open is false because gated channels can open or close in response to different stimuli.

Step-by-step explanation:

One of the statements about gated channels is false. Gated channels indeed allow the passage of ions or molecules across a cell membrane (statement 1), can be opened or closed in response to specific signals or conditions (statement 2), and play a crucial role in regulating the movement of substances in and out of cells (statement 4). However, the false statement is that gated channels are always open (statement 3). In reality, these channels are not always open; they can open or close in response to various stimuli, including chemical or electrical signals, temperature, or mechanical force.