Question

Pepsinogen is converted to pepsin by

• A. Low pH
• B. Trypsinogen
• C. Chymotrypsin
• D. Enterokinase

Answer 1

The correct option is A Low pH

Pepsinogen is converted to pepsin, which digests proteins. Pepsinogen production is stimulated by the presence of gastrin in the blood. Hydrochloric acid ($HCl$), converts pepsinogen to pepsin, which breaks down proteins to peptides. $HCl$ maintains a pH in the stomach of approximately 2.0.