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Quiz Chapter 3: Nutrition

10 questions · Form 2 Science Bab 3: Nutrition

10 questions · plays in fullscreen

Full Question List & Answer Key

Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.

1. What deficiency condition arises when a person's diet lacks sufficient Iodine?

  1. Rickets
  2. Goitre
  3. Anaemia
  4. Scurvy
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Answer: B

Iodine is essential for thyroid hormone production; lack of iodine leads to thyroid gland enlargement, known as goitre.

2. Which structural feature of the villus is specifically responsible for absorbing fatty acids and glycerol?

  1. Blood Capillary
  2. Lacteal
  3. Thick Epithelium
  4. Mucus Gland
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Answer: B

Lacteals are specialized lymphatic vessels located inside each villus that absorb fatty acids, glycerol, and fat-soluble vitamins.

3. What is the primary role of dietary fibre in the human digestive system?

  1. Providing quick chemical energy
  2. Stimulating peristalsis to prevent constipation
  3. Emulsifying fats in the duodenum
  4. Synthesizing hemoglobin in red blood cells
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Answer: B

Dietary fibre adds bulk to undigested material, helping the intestinal muscles push waste efficiently through peristalsis.

4. A patient suffers from bleeding gums and slow wound healing. Which vitamin deficiency is the patient most likely experiencing?

  1. Vitamin A
  2. Vitamin C
  3. Vitamin D
  4. Vitamin K
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Answer: B

Vitamin C deficiency causes scurvy, characterized by swollen and bleeding gums, skin hemorrhages, and delayed healing of wounds.

5. What happens during the assimilation process of glucose in human liver and muscle cells?

  1. Excess glucose is converted into amino acids
  2. Glucose is oxidized to release energy, and excess is stored as glycogen
  3. Glucose is excreted through the rectum during defaecation
  4. Glucose is converted directly into bile salts
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Answer: B

During assimilation, cells oxidize glucose for cellular energy. Excess glucose is converted by insulin into glycogen for storage.

6. Which individual requires the highest proportion of Iron in their daily diet?

  1. An elderly retired male
  2. An adult woman who is pregnant or menstruating
  3. A sedentary desk worker
  4. A young child
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Answer: B

Iron is needed to produce hemoglobin; pregnant and menstruating women need extra iron to support fetal blood formation and replace blood loss.

7. Which adaptation of the small intestine villi minimizes the diffusion distance for absorbed nutrients?

  1. Thick muscular walls
  2. Epithelial lining that is only one cell thick
  3. Presence of gastric acid glands
  4. Long coiled structure of the ileum
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Answer: B

A single-cell-thick epithelium provides a very short diffusion pathway for nutrients to enter blood capillaries and lacteals.

8. Which enzyme in the human digestive system is responsible for converting starch into maltose in the mouth?

  1. Protease
  2. Salivary Amylase
  3. Lipase
  4. Maltase
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Answer: B

Salivary amylase secreted by the salivary glands breaks down complex starch into simple disaccharide maltose in the buccal cavity.

9. By what mechanism does food travel down the oesophagus into the stomach?

  1. Gravitational Freefall
  2. Peristalsis
  3. Active Transport
  4. Osmotic Suction
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Answer: B

Peristalsis is the wave-like muscular contraction and relaxation of intestinal walls pushing food through the alimentary canal.

10. Which list contains ONLY fat-soluble vitamins?

  1. Vitamins A, B, C, D
  2. Vitamins B and C
  3. Vitamins A, D, E, K
  4. Vitamins C, D, E, K
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Answer: C

Vitamins A, D, E, and K are fat-soluble, whereas Vitamins B and C are water-soluble.

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