Question

most lipids contain long chains of which two atoms?
carbon and hydrogen
water and hydrogen
carbon and nitrogen
water and oxygen

Explanation:

Lipids are organic compounds. They mainly consist of long - chain hydrocarbons, which are made up of carbon and hydrogen atoms. Water is a molecule, not an atom, so options with water are incorrect. Nitrogen is not a major component of the long - chains in most lipids.

Answer:

carbon and hydrogen