Nokea
In which order do these events occur in human nutrition?
- A. digestion→ ingestion→ absorption→ assimilation
- B. digestion→ ingestion→ assimilation→ absorption
- C. ingestion→ digestion→ absorption→ assimilation
- D. ingestion→ digestion→ assimilation→ absorption
Correct Answer: C
Rationale: Food is first ingested, then digested, absorbed into the bloodstream, and finally assimilated into cells.
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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.
Proteins are composed of substances called
- A. lipids
- B. amino acids
- C. carbohydrates
- D. nucleotides
Correct Answer: B
Rationale: Proteins are polymers of amino acids, their fundamental building blocks.
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.
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.
A carbohydrate splitting enzyme is secreted by -
- A. Liver
- B. Zymogen cells of gastric glands
- C. Spleen
- D. Crypts of Lieberkuhn
Correct Answer: D
Rationale: Crypts of Lieberkuhn secrete enzymes like maltase that split carbohydrates.