Question

the models show the chemical structures of an amino acid and a fatty acid. complete the table to compare these structures.

	amino acid	fatty acid
contains nitrogen
has an amino group

Explanation:

Step1: Recall triglyceride composition

Triglycerides are composed of glycerol and fatty - acids. Amino acids are building blocks of proteins. So, amino acid is not a building block of triglycerides (No), and fatty acid is a building block of triglycerides (Yes).

Step2: Analyze nitrogen content

The amino - acid structure has a nitrogen atom in the amino group ($-NH_2$). The fatty - acid structure does not have nitrogen atoms. So, amino acid contains nitrogen (Yes), and fatty acid does not contain nitrogen (No).

Step3: Identify amino group

The amino - acid structure has an amino group ($-NH_2$). The fatty - acid structure does not have an amino group. So, amino acid has an amino group (Yes), and fatty acid does not have an amino group (No).

Answer:

	Amino acid	Fatty acid
Contains nitrogen	Yes	No
Has an amino group	Yes	No