Formative Practice 3.3 – Science Form 2 Chapter 3


Question 1:
What is meant by digestion?

Answer:
Digestion is the process of breaking down large and complex food into small and simple molecules.


Question 2:
Complete the flow chart about the flow of food in the digestive tract.


Answer:
(a) Mouth 
(b) Oesophagus 
(c) Stomach 
(d) Duodenum
(e) Small intestine
(f) Large intestine
(g) Rectum
(h) Anus


Question 3:
Name three digestive enzymes and state their function.

Answer:
(a) Amylase: To digest starch

(b) Protease: To digest protein

(c) Lipase: To digest fat


Question 4:
A man with a tumour in his pancreas had a surgery to remove his pancreas. Explain the effect on the process of digestion.

Answer:
Protease, lipase and amylase cannot be produced. Therefore, protein, fat and starch cannot be digested effectively.

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