Enzymes can be proteins, lipids, or carbohydrates.

Systemic blood vessels transport blood

A) from the left ventricle through the body to the left atrium.
B) from the left ventricle through the body to the right atrium.
C) from the right ventricle through the body to the left atrium.
D) from the right ventricle through the body to the right atrium.
E) from the left ventricle to the lungs.