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densk [106]
4 years ago
13

What functions do proteins perform in the cell membrane?

Biology
1 answer:
kumpel [21]4 years ago
4 0

Answer:

A) they help transport some substances through the membrane.

Explanation:

The membrane proteins that span the bilayer of phospholipids help in the transport of polar, large and charged substances across the membrane. The nonpolar core of the membrane does not allow these charged and polar substances to pass through. Proteins serving as channels form pores to allow movement of the specific substances.  

On the other hand, carrier transport proteins of the membrane bind to the substances present at one side of the membrane and deliver them to the opposite side.

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Answer:

The S naked flasks allowed the air to pass into the flask, but the curve design retained any airborne microorganism that contaminate the broth

Explanation:

  • The theory of spontaneous generation supported the idea that new living organisms arise spontaneously from non living matter.
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  • This was possible because the <em>S shaped neck flask did not allow any microbe to contaminate the broth. </em>

<em></em>

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Hopefully this helped hun! Have a great day!
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