Nokea
During prolonged starvation, body derives nutrition from storage of -
- A. Liver and adipose tissue
- B. Spleen
- C. Liver and lungs
- D. Subcutaneous fat and Pancreas
Correct Answer: A
Rationale: During starvation, the body uses glycogen from the liver and fats from adipose tissue.
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Parotid gland, all true except:
- A. Secrete 25% of salivary secretion
- B. Formed mainly of mixed acini
- C. Has prominent striated ducts
- D. Its inflammation results in mumps
Correct Answer: B
Rationale: The parotid gland is purely serous, not mixed, secreting watery saliva rich in enzymes.
The end product of digestion of starch which is absorbed into the bloodstream is:
- A. amino acid
- B. fatty acid
- C. glucose
- D. sucrose
Correct Answer: C
Rationale: Starch is broken down into glucose by enzymes like amylase and maltase, which is then absorbed into the bloodstream.
What statement is wrong about bile?
- A. It is necessary for fat digestion
- B. It is stored in the gall bladder
- C. It is important only for normal digestion of sugar
- D. It activates lipase
Correct Answer: C
Rationale: Bile is not involved in sugar digestion; it emulsifies fats for digestion.
Sweating during exercise will cause loss of water to the body. It is important to replace the water or could set in:
- A. leukemia
- B. dehydration
- C. heart disease
- D. diabetes
Correct Answer: B
Rationale: Dehydration occurs when water loss exceeds intake, a common risk during exercise.
Enzyme pepsin acts upon food at a pH of about-
- A. 1.8 to split proteins
- B. 2 to split carbohydrate
- C. 7 to change protein into peptones
- D. 2 to change protein in amino acids
Correct Answer: A
Rationale: Pepsin works at a pH of about 1.8 to break down proteins into peptides.