Nokea
Enzyme pepsin acts upon food at a pH of about-
- A. 1.8 to split proteins
- B. 2 to split carbohydrate
- C. 7 to change protein into peptones
- D. 2 to change protein in amino acids
Correct Answer: A
Rationale: Pepsin works at a pH of about 1.8 to break down proteins into peptides.
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Amylase in saliva initiates digestion of:
- A. lipids
- B. proteins
- C. fats
- D. carbohydrates
Correct Answer: D
Rationale: Salivary amylase breaks down carbohydrates into simpler sugars.
Sweating during exercise will cause loss of water to the body. It is important to replace the water or could set in:
- A. leukemia
- B. dehydration
- C. heart disease
- D. diabetes
Correct Answer: B
Rationale: Dehydration occurs when water loss exceeds intake, a common risk during exercise.
Out of four layers of alimentary canal, which one forms villi, (finger-like projection)?
- A. Serosa
- B. Mucosa
- C. Submucosa
- D. Muscularis
Correct Answer: B
Rationale: The mucosa layer forms villi, increasing the surface area for absorption in the small intestine.
In human body, the digestion of protein begins in which of the following organs?
- A. Liver
- B. Mouth
- C. Small intestine
- D. Stomach
Correct Answer: D
Rationale: The digestion of protein begins in the stomach, where pepsin, activated by hydrochloric acid, starts breaking down proteins into smaller peptides.
Based on knowledge of the location of the pancreas, how should the student explain the location of the surgical incision?
- A. Upper abdomen, behind the stomach
- B. Right lower quadrant
- C. Left lower quadrant
- D. Right upper quadrant
Correct Answer: A
Rationale: The pancreas is retroperitoneal, located in the upper abdomen behind the stomach.