Question

What is the name of fastest enzyme ?

• A. Urease
• B. Pepsin
• C. Carbonic Anhydrase
• D. Trypsin

Answer 1

The correct option is C

Carbonic Anhydrase

The correct answer is option C.

Explanation of correct option :

1. Carbonic anhydrase, enzyme found in red blood cells, gastric mucosa, pancreatic cells, and renal tubules that catalyzes the inter-conversion of carbon dioxide (CO₂) and water into carbonic acid (H₂CO₃), protons and bicarbonate ions.
2. Carbonic anhydrase catalyzes reversible reaction between carbon dioxide and water to form carbonic acid.
3. This enzyme is one of the fastest enzyme.
4. This enzyme also functions in the formation of hydrochloric acid by the stomach.

Explanation of incorrect options :

Option A

1. Urease is a nickel containing enzyme that catalyzes the hydrolysis of urea, forming ammonia and carbon dioxide.
2. This enzyme is found in large quantities in jack beans, soybeans, and other plant seeds, it also occurs in some animal tissues and intestinal microorganisms.
3. Urease is noted as the first enzyme to be purified and crystallized by James B. Sumner in 1926.

Option B

1. Pepsin, an endopeptidase enzyme produced in the gastric chief cells of the stomach lining that breaks down proteins into smaller peptide or amino acid during digestion.
2. Stomach acid (HCl) changes a protein called pepsinogen into pepsin.

Option D

1. Trypsin is a proteolytic enzyme that breaks down proteins into smaller peptides or amino acids.
2. Trypsin is produced by the pancreas in an inactive form called trypsinogen. The trypsinogen enters the small intestine through the common bile duct and is converted to active trypsin.
3. This active trypsin break down dietary protein into peptides and amino acids.
4. These amino acids are essential for muscle growth, hormone production and other important bodily functions.

Final answer: Carbonic Anhydrase is the name of fastest enzyme.