Question

the models show the chemical structures of an amino acid and a nucleotide. complete the table to compare these structures. amino acid nucleotide is a building block of dna contains nitrogen has an amino group

Explanation:

Step1: Recall DNA building - blocks

DNA is made up of nucleotides, not amino - acids. So for "Is a building block of DNA", amino acid is no and nucleotide is yes.

Step2: Analyze nitrogen content

Both amino acids (due to the amino group $-NH_2$) and nucleotides (in the nitrogen - containing base part) contain nitrogen.

Step3: Identify amino group

Amino acids have an amino group ($-NH_2$), while nucleotides do not have an amino group as a distinct functional group in the same sense.

Answer:

Amino acid	Nucleotide
Yes	Yes
Yes	No