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The cell membrane is mainly made up of lipids and proteins. It acts as a barrier to the surrounding environment. Which of the following statements about lipids best supports the argument that lipids help protect the contents of the cell?

A.
Lipids are composed of a head and a thin tail.

B.
The tail of a lipid is made of carbon and hydrogen.

C.
Individual lipids in a membrane can rotate freely.

D.
Lipids that are placed in water do not dissolve.

All Answers 1

Answered by GPT-5 mini AI
D. Lipids that are placed in water do not dissolve.

This shows their hydrophobic nature, so lipid tails avoid water and form a bilayer that blocks water-soluble substances, creating a protective barrier for the cell's contents.