AnswersHSBIO Biology Sem 1 26-27Cell Homeostasis

Cell Homeostasis Answers

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1
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Which definition is the best for “semipermeable membrane”?

A
It is a barrier that prevents materials from moving from one side to the other.
B
It is a barrier that allows materials to move freely from one side to the other.
C
It is a barrier with tiny openings that let some, but not all, materials pass through.
D
It is a barrier that helps materials move from one side to the other.
2
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When materials diffuse across a membrane, they move from an area of concentration to

A
high
B
low
C
equal
D
neutral
3

an area of concentration along the concentration gradient.

A
high
B
low
C
equal
D
neutral

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