Nokea
Pancreatic juice contains a protein-splitting enzyme called:
- A. trypsin
- B. zymogen
- C. pepsin
- D. amylase
Correct Answer: A
Rationale: Trypsin is a pancreatic enzyme that digests proteins.
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Which of the following is a key function of the liver?
- A. Produces bile for fat digestion
- B. Absorbs water
- C. Secretes saliva
- D. Moves food via peristalsis
Correct Answer: A
Rationale: The liver produces bile to emulsify fats, among other functions like detoxification and nutrient metabolism.
Which organ in the list is the largest gland in the human body?
- A. parotid
- B. liver
- C. pancreas
- D. thyroid
Correct Answer: B
Rationale: The liver is the largest gland in the human body, weighing about 1.5 kg in adults, and performs numerous functions including bile production and detoxification.
During prolonged fasting-
- A. First fats are used up, followed by carbohydrate from liver and muscles, and protein in the end
- B. First carbohydrate are used up, followed by fat and proteins towards end
- C. First lipids, followed by proteins and carbohydrates towards end.
- D. None of the above
Correct Answer: B
Rationale: In fasting, carbohydrates (glycogen) are used first, followed by fats, and then proteins.
The small intestine of a person contains a lower concentration of glucose than is present in the blood. The cells of the villi absorb glucose. By which process is the glucose absorbed?
- A. by active transport against the concentration gradient
- B. by active transport down the concentration gradient
- C. by diffusion against the concentration gradient
- D. by diffusion down the concentration gradient
Correct Answer: A
Rationale: Glucose absorption in the small intestine occurs through active transport, particularly when the concentration of glucose is higher in the blood than in the intestine. This requires energy to move glucose against its concentration gradient.
Match each term with the correct description: organs that filter blood to remove wastes collected from all cells
- A. urethra
- B. urinary system
- C. bladder
- D. kidneys
Correct Answer: D
Rationale: The kidneys filter blood to remove cellular wastes.