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Margarita [4]
3 years ago
8

Which definition is the best for “semipermeable membrane”?

Biology
2 answers:
kogti [31]3 years ago
5 0
A semipermeable membrane is any biological or synthetic membrane that allows certain molecules or ions to pass through while restricting others.
Leto [7]3 years ago
3 0

Answer:

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

Explanation:

I got it right off of an edgenuity test.

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Read 2 more answers
What environmental stimulus is most likely to result in a more rapid heartbeat in an animal?
Kipish [7]

Answer:

This question is incomplete, the options are:

A) Decreased temperature

B) Strong southerly winds

C) Presence of a predator

D) Lack of water

The answer is C

Explanation:

A stimulus is something that provokes a response or reaction in a living organism. It can either be internal or external. An animal can respond to stimulus such as hunger, heat, predator etc.

However, among all the listed stimuli in the options, the PRESENCE OF A PREDATOR is most likely to result in a more rapid heartbeat in an animal. This is because the predator stimulus will require the animal to respond by running in order to survive. Running will increase its metabolic activity and cause its heartbeat to increase.

8 0
3 years ago
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