Nokea
Dietary fibres are very much required in our daily food, so as to?
- A. To provide extra protein
- B. To balance the insulin secreted by pancreas
- C. To help our body get rid of undigested food
- D. To decrease tiredness
Correct Answer: C
Rationale: Dietary fiber aids in digestion by adding bulk to stool and helping the body eliminate undigested food, promoting regular bowel movements.
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Urine leaves the body through a tube called
- A. the urethra
- B. the ureter
- C. the bladder
- D. the nephron
Correct Answer: A
Rationale: The urethra is the tube through which urine exits the body.
Four test tubes, each containing 2cm3 of amylase solution are treated as follows: 1 boiled, then cooled to 1 °C 2 boiled, then cooled to 25 °C 3 frozen, then warmed to 1 °C 4 frozen, then warmed to 25 °C 10 cm3 of starch solution were then added to each tube and after 5 minutes, 2 drops of iodine solution were added to each tube. Which row shows the results?
- A. 1: blue-black, 2: blue-black, 3: yellow-brown, 4: yellow-brown
- B. 1: blue-black, 2: yellow-brown, 3: blue-black, 4: yellow-brown
- C. 1: yellow-brown, 2: blue-black, 3: blue-black, 4: yellow-brown
- D. 1: yellow-brown, 2: yellow-brown, 3: blue-black, 4: blue-black
Correct Answer: A
Rationale: Boiling denatures the enzyme permanently, while freezing does not affect its activity once thawed.
Simple sugar of blood is-
- A. Dextrin
- B. Lactose
- C. Sucrose
- D. Glucose
Correct Answer: D
Rationale: Glucose is the primary simple sugar circulating in the blood.
Match: Peristalsis
- A. moves food along the digestive tract
- B. initiates swallowing
- C. produces enzymes
- D. breaks down nutrients
Correct Answer: A
Rationale: Peristalsis refers to the wave-like muscular contractions that propel food along the digestive tract.
Which of the following choices leads to an elevation in stomach pH?
- A. Impairment of the mucous neck cells
- B. Heightened activity of G cells
- C. Suppression of parietal cells
- D. Excessive expression by chief cells
Correct Answer: C
Rationale: Suppression of parietal cells reduces HCl secretion, increasing stomach pH (making it less acidic).