he enzyme in red blood cells that breaks down carbonic acid is called anhydrase.

This statement is partially correct. The enzyme in red blood cells that aids in the conversion of carbonic acid (H₂CO₃) to bicarbonate (HCO₃⁻) and a proton (H⁺) is called carbonic anhydrase. This enzyme plays a crucial role in the bicarbonate buffer system, enabling the transport of carbon dioxide (CO₂) from the tissues to the lungs, where it can be exhaled. Carbon dioxide in the bloodstream primarily exists in the form of bicarbonate ions, which is a vital part of maintaining pH balance in the body. Carbonic anhydrase facilitates this reaction quickly, allowing the body to respond efficiently to changes in carbon dioxide levels.