Nokea
How is food processed to distribute nutrients to the body's cells?
- A. Ingested, digested, absorbed, assimilated
- B. Absorbed directly from the mouth
- C. Excreted immediately
- D. Stored in the stomach indefinitely
Correct Answer: A
Rationale: Food is ingested (taken in), digested (broken down), absorbed (taken into blood), and assimilated (distributed to cells).
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Which statement about chemical digestion in the human alimentary canal is correct?
- A. Digestion of carbohydrates is completed in the colon.
- B. Enzymes are secreted to break down cellulose in the duodenum.
- C. Protein digestion is completed in the ileum.
- D. The stomach secretes enzymes to break down starch.
Correct Answer: C
Rationale: Protein digestion begins in the stomach with pepsin and is completed in the ileum by proteolytic enzymes from the pancreas and intestinal mucosa.
Digestion of starch starts from the mouth, whereas ...A... is the site of digestion mainly for ...B... Choose the correct combination of options to complete the given statement.
- A. A-Stomach; B-Protein
- B. A-Stomach; B-Starch
- C. A-Small intestine; B-Protein
- D. A-Small intestine; B-Cellulose
Correct Answer: C
Rationale: The small intestine is the primary site for protein digestion, while starch digestion begins in the mouth.
Match: Bile
- A. breaks fat into smaller droplets
- B. digests carbohydrates
- C. absorbs vitamins
- D. neutralizes stomach acid
Correct Answer: A
Rationale: Bile emulsifies fats, breaking them into smaller droplets to facilitate digestion by lipases.
Match: Disaccharide
- A. a sugar composed of two monosaccharides
- B. stored form of energy
- C. used in DNA synthesis
- D. component of cell membranes
Correct Answer: A
Rationale: Disaccharides, like sucrose, consist of two monosaccharides linked together and are broken down into simpler sugars during digestion.
Fungiform papillae are most numerous in:
- A. Pharyngeal part of the tongue [post. 1/3rd]
- B. Oral part of the tongue
- C. Edges & tip of tongue.
- D. Basolateral area of oral part of the tongue.
Correct Answer: B
Rationale: Fungiform papillae are scattered across the oral part of the tongue but are most concentrated at the edges and tip, where taste perception is heightened.