Select all that apply. Proteins
contain carbon hydrogen, oxygen, and nitrogen.
consist of amino acids
are derived from fruits and vegetables
are part of antibodies

Explanation:

Proteins are long-chain macromolecules made up of amino acid monomers.  Amino acids are organic compounds with an amine and carbonyl group. They contain Carbon, Hydrogen, and Oxygen, along with Nitrogen as their basic elements.  They are often found in meat, fish, dairy and legumes.

In the body, proteins are important immunomodulation and the immune response. The body produces antibodies (Ab) or immunoglobulin (Ig) to help neutralize or tag foreign invaders by binding to specific antigens on the pathogen's surface.