Question

carbohydrate molecules
form the regulatory molecules known as enzymes.
are the bodys most readily available source of energy.
are the building blocks of cellular membranes.
are composed of c, h, o, and n atoms.
contain the genetic information found in cells.

Explanation:

Enzymes are proteins, not carbohydrates. Lipids are building - blocks of cellular membranes. Carbohydrates are composed of C, H, and O, not N. Nucleic acids contain genetic information. Carbohydrates are the body's most readily available energy source.

Answer:

are the body's most readily available source of energy.