Nokea
Which of the following is not a function of the pancreas?
- A. neutralization of gastric juice
- B. Production of amylase
- C. Secretion of lipases to break down fats into glycerol and fatty acids
- D. Secretion of pepsin
Correct Answer: D
Rationale: The pancreas does not secrete pepsin; this enzyme is produced by the stomach to digest proteins.
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Carbohydrates are comprised of carbon, , and oxygen.
- A. iron
- B. hydrogen
- C. nitrogen
- D. sulfur
Correct Answer: B
Rationale: Carbohydrates consist of carbon, hydrogen, and oxygen in a specific ratio.
Which food substance is absorbed, without digestion?
- A. Carbohydrates
- B. Proteins
- C. Vitamins
- D. Fats
Correct Answer: C
Rationale: Vitamins are absorbed without digestion, unlike macronutrients.
The structure which prevents entry of food into wind pipe during swallowing in mammals is-
- A. Larynx
- B. Glottis
- C. Epiglottis
- D. Pharynx
Correct Answer: C
Rationale: The epiglottis closes over the glottis during swallowing to prevent food from entering the trachea.
Bilirubin and biliverdin are formed in-
- A. Kidney
- B. Liver
- C. Salivary glands
- D. Stomach
Correct Answer: B
Rationale: Bilirubin and biliverdin are bile pigments formed in the liver from hemoglobin breakdown.
The primary site for absorption of water by the digestive system is the:
- A. oesophagus
- B. colon (large intestine)
- C. small intestine
- D. liver
Correct Answer: B
Rationale: The colon (large intestine) is the primary site for water absorption, consolidating waste into feces.