Nokea
Each part of the alimentary canal has the optimum pH for the enzymes that digest food there. What is the optimum pH for an enzyme that works in the stomach?
- A. pH 2
- B. pH 7
- C. pH 9
- D. pH 12
Correct Answer: A
Rationale: The stomach's acidic environment (around pH 2) is optimal for the function of pepsin, which breaks down proteins.
You may also like to solve these questions
Match each term with the correct description: tubes that lead from each kidney to the bladder
- A. urethra
- B. urinary system
- C. ureters
- D. kidneys
Correct Answer: C
Rationale: The ureters are tubes transporting urine from the kidneys to the bladder.
Which organ is retroperitoneal?
- A. liver
- B. ileum
- C. stomach
- D. pancreas
Correct Answer: D
Rationale: The pancreas is a retroperitoneal organ, located behind the peritoneum.
Which of the following enzymes formed in the pancreas aids in protein digestion?
- A. Amylase
- B. Lipase
- C. Trypsinogen
- D. Trypsin
Correct Answer: D
Rationale: Trypsin, activated from trypsinogen, is a pancreatic enzyme that digests proteins.
C-shaped widest part of intestine
- A. Pancreas
- B. Liver
- C. Duodenum
- D. Thyroid
Correct Answer: C
Rationale: The duodenum is the C-shaped, widest part of the small intestine.
Which division of the Enteric Nervous System is most likely to be stimulated by a pH change in the chyme?
- A. Submucosal Plexus (Meissner plexus)
- B. Myenteric Plexus (Auerbach Plexus)
- C. Both
- D. Neither
Correct Answer: A
Rationale: The submucosal plexus regulates secretions and senses luminal pH changes, responding to chyme acidity.