Question

multiple select question
select all that apply
choose all that are examples of important proteins in the body.

enzymes

nucleic acids

hemoglobin

keratin

glycogen

Explanation:

To solve this, we analyze each option:

• Enzymes: Most enzymes are proteins and play vital roles in biochemical reactions.
• Nucleic acids: These are DNA and RNA, not proteins.
• Hemoglobin: A protein in red blood cells that carries oxygen.
• Keratin: A structural protein in hair, skin, nails.
• Glycogen: A carbohydrate (polysaccharide), not a protein.

So the correct options are Enzymes, Hemoglobin, and Keratin.

Answer:

A. Enzymes, C. Hemoglobin, D. Keratin