epididymis-vas deferens-urethra
Answer: [B]: "proteins" .
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The function of the cell membrane is to protect the cell from any outer surroundings that could be harmful to it.
If the molecules are broken down into their different atoms that’s mean that the molecules are going fast or slow
Lipids are good for making the cell membrane because they are stronger and block out things that should not be getting in out, for instance lipids mainly only let water and gases pass through.
