Question

1. identify this molecule:

options:
atp

disaccharide

carbonyl group

fatty acid (carboxyl group)

Explanation:

The molecule has a carboxyl group ($\text{-COOH}$) at one end and a long hydrocarbon chain with carbon-carbon double bonds, which matches the structure of an unsaturated fatty acid. ATP is a nucleotide with phosphate groups, disaccharides are sugar dimers, and a carbonyl group is a functional group, not a full molecule.

Answer:

fatty acid (carboxyl group)