Cell Homeostasis Answers

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Which definition is the best for “semipermeable membrane”?

It is a barrier that prevents materials from moving from one side to the other.

It is a barrier that allows materials to move freely from one side to the other.

It is a barrier with tiny openings that let some, but not all, materials pass through.

It is a barrier that helps materials move from one side to the other.

Check all correct elements below that you included in your question.

format: “What is the effect of X on Y?”

independent variable: molecule size

dependent variable: ability to diffuse across a semipermeable membrane

Check all correct elements below that you included in your hypothesis.

correct conclusion (“then”): Molecules will diffuse through the membrane

correct reason (“because”): Molecules can pass through the membrane’s tiny openings.

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