What does it mean for a membrane to be selectively permeable? Only certain molecules are allowed to pass throu

Question

What does it mean for a membrane to be selectively permeable?
Only certain molecules are allowed to pass through.
The membrane is rigid and only allows water to pass through.
All types of molecules are able to pass into the cell.
The membrane is rigid and nothing can enter or leave the cell.

GPT-5 mini · Answer

"Only certain molecules are allowed to pass through."

Explanation: A selectively permeable (semipermeable) membrane allows some substances to cross while blocking others, using passive (diffusion, osmosis) and active transport (pumps, channels). The other choices describe membranes that are either freely permeable or completely impermeable, which are incorrect.

What does it mean for a membrane to be selectively permeable?
Only certain molecules are allowed to pass through.
The membrane is rigid and only allows water to pass through.
All types of molecules are able to pass into the cell.
The membrane is rigid and nothing can enter or leave the cell.

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What does it mean for a membrane to be selectively permeable? Only certain molecules are allowed to pass through. The membrane is rigid and only allows water to pass through. All types of molecules are able to pass into the cell. The membrane is rigid and nothing can enter or leave the cell.

All Answers 1

Submit Your Answer

What does it mean for a membrane to be selectively permeable?
Only certain molecules are allowed to pass through.
The membrane is rigid and only allows water to pass through.
All types of molecules are able to pass into the cell.
The membrane is rigid and nothing can enter or leave the cell.