Question

mark argues that proteins within the body have two functions: structure and transport. sara disagrees. which significant function of proteins did mark omit from his list?
a. proteins increase the speed of reactions in the body.
b. proteins store energy that can be released when the body needs it.
c. proteins form waxy, waterproof coverings.
d. proteins store genetic information within cells.

Explanation:

Enzymes, which are proteins, act as catalysts to increase the speed of reactions in the body. Energy - storing molecules are mainly fats and carbohydrates, not proteins. Waxy, waterproof coverings are typically made of lipids. Genetic information is stored in nucleic acids like DNA, not proteins.

Answer:

A. Proteins increase the speed of reactions in the body.