Question

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

Explanation:

Lipids are organic compounds. Organic compounds typically have long chains of carbon atoms. And hydrogen is commonly bonded to carbon in such chains. Water is a molecule (\(H_2O\)) and not an atom. Phosphorus is not a main component in the long - chain part of most lipids. Oxygen is present in some lipid functional groups (like in esters of fatty acids), but the long chains are mainly of carbon and hydrogen.

Answer:

carbon and hydrogen