Question

Which of these is NOT a protein function?

A. Hemoglobin carries oxygen to the organs and tissues.
B. Enzymes speed up reaction rates.
C. Antibodies fight infections and diseases.
D. Phospholipids provide structural support to the cell membrane.

Answer 1

D. Phospholipids provide structural support to the cell membrane.

Step-by-step explanation:

Phospholipids are a type of lipid, not protein. Proteins are composed of amino acids, while lipids are composed of fatty acids.