Nokea
Emulsification of fats by bile takes place in-
- A. Duodenum
- B. Liver
- C. Stomach
- D. Intestine
Correct Answer: A
Rationale: Bile emulsifies fats in the duodenum, the first part of the small intestine.
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Disaccharides are digested by
- A. secretin
- B. disaccharidase
- C. lipase
- D. pepsin
Correct Answer: B
Rationale: Disaccharidases, such as sucrase, lactase, and maltase, digest disaccharides into monosaccharides for absorption.
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.
Which of these is not a carbohydrate?
- A. sugar
- B. starch
- C. fat
- D. cellulose
Correct Answer: C
Rationale: Fat is a lipid, not a carbohydrate, unlike sugar, starch, and cellulose.
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 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.