Question

complete the table to compare the structures of a protein and dna.
protein dna
may have multiple polypeptide chains
may have an alpha helix or a beta sheet
has two strands of nucleotides joined together

Explanation:

Proteins can have multiple polypeptide chains and may have secondary structures like alpha - helix or beta - sheet. DNA is composed of two strands of nucleotides joined together.

Answer:

	Protein	DNA
May have an alpha helix or a beta sheet	Yes	No
Has two strands of nucleotides joined together	No	Yes