Nokea
Match: Polysaccharide
- A. starch or cellulose
- B. composed of amino acids
- C. used for insulation
- D. makes up cell membranes
Correct Answer: A
Rationale: Polysaccharides, such as starch and cellulose, are complex carbohydrates that store energy or provide structural support.
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Which process matches the definition: The uptake of substances by the GI tract?
- A. Absorption
- B. Ingestion
- C. Peristalsis
- D. Assimilation
Correct Answer: A
Rationale: Absorption is the process by which nutrients are taken up from the GI tract into the bloodstream.
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.
Secretion of enterogastrone would be stimulated by the presence of:
- A. protein in the small intestine
- B. protein in the stomach
- C. fat in the small intestine
- D. fat in the stomach
Correct Answer: C
Rationale: Enterogastrone secretion is triggered by fats in the small intestine to slow gastric emptying.
CAVEOLATED CELLS all true except:
- A. Rare cells in gastric & intestinal mucosa may be chemoreceptor
- B. Their microvilli are long twice the length of those nearby cells
- C. Apical cell membrane shows deep tubular invaginations (Caveolae).
- D. Important cell for mucosal regeneration
Correct Answer: D
Rationale: Caveolated (tuft) cells are sensory, not regenerative; stem cells handle mucosal regeneration.
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.