Nokea
Which of the following is not a source of protein?
- A. broccoli
- B. red meat
- C. beans
- D. rice
Correct Answer: A
Rationale: Broccoli contains some protein but is primarily a source of vitamins and fiber, not a primary protein source like meat or beans.
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What are the advantages of chewing food at the start of digestion?
- A. increasing surface area
- B. lubricating food
- C. making food soluble
- D. all of the above
Correct Answer: D
Rationale: Chewing increases the surface area for enzyme action, lubricates food with saliva, and helps dissolve food particles.
Match each term with the correct description: made up of organs that rid your body of wastes and control blood volume
- A. urethra
- B. urinary system
- C. bladder
- D. kidneys
Correct Answer: B
Rationale: The urinary system includes organs that remove wastes and regulate blood volume.
An investigation is carried out on digestion and absorption in the alimentary canal. The diagram shows the apparatus used. The visking tubing is permeable to small molecules such as glucose but not to large molecules such as starch. beaker water starch solution and amylase visking tubing glass rod to support visking tubing After one hour, samples of water in the beaker are tested with Benedict's solution and with iodine solution. Which colours are obtained?
- A. blue with Benedict's, blue-black with iodine
- B. blue with Benedict's, yellow-brown with iodine
- C. red with Benedict's, blue-black with iodine
- D. red with Benedict's, yellow-brown with iodine
Correct Answer: D
Rationale: Starch is broken down to glucose, which passes through the visking tubing, giving a positive Benedict's test (red), while iodine remains negative as starch cannot pass through.
Adenoids are enlarged:
- A. Palatine tonsil
- B. Pharyngeal tonsil
- C. Lingual tonsil
- D. Laryngeal tonsil
Correct Answer: B
Rationale: Adenoids refer to the enlarged pharyngeal tonsil, located in the nasopharynx, which can obstruct breathing when hypertrophied.
The following cells are found in gastric glands EXCEPT:
- A. Parietal cells
- B. Goblet cells
- C. Chief cells
- D. Argentaffine cells.
Correct Answer: B
Rationale: Goblet cells are found in the intestines, not gastric glands, which contain parietal, chief, and argentaffin (enteroendocrine) cells.