Question

the diagram shows the general structure of a lipid, which consists of two main parts. which part is circled? alcohol group fatty acid carboxyl group unsaturated lipid

Explanation:

A lipid has two main parts - a carboxyl group (\( -COOH \)) and a hydrocarbon chain. The carboxyl group consists of a carbon atom double - bonded to an oxygen atom (\( C = O \)) and also bonded to a hydroxyl group (\( -OH \)). In the given diagram, the circled part represents the carboxyl group. An alcohol group is \( -OH \) attached to a carbon in a non - carbonyl context. A fatty acid is a long - chain hydrocarbon with a carboxyl group at one end (the whole lipid structure here is more than just the fatty acid part). An unsaturated lipid has double bonds in the hydrocarbon chain (not indicated by the circled part).

Answer:

carboxyl group