Question

A biological catalyst is essentially :

• A. a carbohydrate
• B. an enzyme
• C. an amino acid
• D. a nitrogen molecule

Answer 1

Answer: (B)

an enzyme

Enzyme Catalysis - These are catalysts in the living system. Enzymes are substances which by their their presence, alter the rate of any biological event. These are mainly proteins, and enzyme action is structure specific.

Enzyme catalysis is the increase in the rate of a chemical reaction by the active site of a protein.

Enzymes are macromolecular biological catalysts. These are highly selective catalysts greatly accelerating both the rate and specificity of metabolic reactions. All enzymes are insoluble since they exist in the colloidal state. Urease is an enzyme that catalyzes the hydrolysis of urea, forming ammonia and carbon dioxide.