Question
A cell uses active transport to move sodium ions out of the cell. Why does the cell use active transport instead of diffusion to move sodium ions out of the cell?
Responses
Diffusion requires proteins along the cell membrane to transport ions outside the cell.
Diffusion requires proteins along the cell membrane to transport ions outside the cell.
Diffusion can only transport water across the cell membrane.
Diffusion can only transport water across the cell membrane.
The cell uses less energy when performing active transport.
The cell uses less energy when performing active transport.
There is a lower concentration of sodium ions inside the cell than outside the cell.
Responses
Diffusion requires proteins along the cell membrane to transport ions outside the cell.
Diffusion requires proteins along the cell membrane to transport ions outside the cell.
Diffusion can only transport water across the cell membrane.
Diffusion can only transport water across the cell membrane.
The cell uses less energy when performing active transport.
The cell uses less energy when performing active transport.
There is a lower concentration of sodium ions inside the cell than outside the cell.
Answers
GPT-4o mini
The correct response is:
**There is a lower concentration of sodium ions inside the cell than outside the cell.**
This statement explains why active transport is necessary. Active transport is used to move sodium ions against their concentration gradient, from an area of lower concentration inside the cell to an area of higher concentration outside the cell. Diffusion would not effectively move sodium ions out of the cell in this case because diffusion occurs from areas of higher concentration to lower concentration.
**There is a lower concentration of sodium ions inside the cell than outside the cell.**
This statement explains why active transport is necessary. Active transport is used to move sodium ions against their concentration gradient, from an area of lower concentration inside the cell to an area of higher concentration outside the cell. Diffusion would not effectively move sodium ions out of the cell in this case because diffusion occurs from areas of higher concentration to lower concentration.