Lipids are made of carbon, nitrogen, and oxygen.
A. True

B. False

True

Explanation: Lipids are composed mainly of carbon and hydrogen, but they can also contain oxygen, nitrogen, sulfur, and phosphorous. They provide nutrients for organisms, store carbon and energy, play structural roles in membranes, and function as hormones, pharmaceuticals, fragrances, and pigments.

B. False

Explanation:

All lipids contain carbon, hydrogen, and oxygen. Some of them also contain nitrogen and phosphorus.

The four main classes of lipids are fats, waxes, sterols, and phospholipids.

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