Question

question 2
look at the molecule shown below. which statement about this molecule is correct?
image source: general zoology figure 4 - openstax
this molecule is an unsaturated fatty acid.
this molecule is not a fatty acid.
this molecule is a saturated fatty acid
this molecule is a phospholipid.
this molecule is a steroid.

Explanation:

Fatty acids have a long - chain hydrocarbon tail and a carboxyl group at one end. Saturated fatty acids have only single bonds in their hydrocarbon chains, while unsaturated fatty acids have one or more double bonds. The given molecule has a long - chain hydrocarbon with a carboxyl group ($-COOH$) at one end and a double bond in the hydrocarbon chain. Phospholipids have a phosphate group and two fatty - acid tails, and steroids have a characteristic four - ring structure. Since this molecule has a double bond in the hydrocarbon chain and is a fatty acid, it is an unsaturated fatty acid.

Answer:

This molecule is an unsaturated fatty acid.