Nokea
Na+ and other carrier ions facilitate absorption of
- A. Amino acids and fructose
- B. Fatty acids and glycerol
- C. Fatty acids and glucose
- D. Amino acids and glucose
Correct Answer: D
Rationale: Sodium ions (Na+) facilitate the absorption of amino acids and glucose through symport mechanisms.
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What structure in the intestine increases surface area?
- A. Villas
- B. Villi
- C. Cilia
- D. Protrusii
Correct Answer: B
Rationale: Villi are finger-like projections in the small intestine that increase surface area for absorption.
Match each term with the correct description: carries urine from bladder to outside of the body
- A. urethra
- B. urinary system
- C. bladder
- D. kidneys
Correct Answer: A
Rationale: The urethra carries urine from the bladder to the outside.
Which of the following describes one function of the stomach?
- A. To introduce carbohydrates to food.
- B. To remove excess water from food.
- C. To temporarily store food.
- D. To absorb nutrients into the bloodstream.
Correct Answer: C
Rationale: The stomach temporarily stores food, mixing it with gastric juices for digestion.
Obstruction of the common bile duct by gallstones would most likely affect the digestion of:
- A. carbohydrates
- B. fats
- C. proteins
- D. nucleic acids
Correct Answer: B
Rationale: Bile is essential for the emulsification and digestion of fats. An obstruction in the common bile duct would impair fat digestion.
Amylase enzyme acts on starch and convert it into-
- A. Maltose
- B. Glucose
- C. Fructose
- D. Galactose
Correct Answer: A
Rationale: Amylase breaks down starch into maltose, a disaccharide.