P5 Science · Chapter 6brightbit.net/worksheets
Digestion
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- 1.
What is digestion?
(a) The absorption of food into the blood(b) The breakdown of large food molecules into smaller, soluble ones(c) The removal of undigested waste from the body(d) The movement of food through the intestines
- 2.
Where does digestion begin?
(a) Stomach(b) Small intestine(c) Mouth(d) Oesophagus
- 3.
What is the function of the stomach?
(a) Absorbs nutrients into the blood(b) Churns food and produces acid to begin protein digestion(c) Produces bile to emulsify fats(d) Removes water from undigested food
- 4.
Where is most nutrient absorption into the blood carried out?
(a) Mouth(b) Stomach(c) Small intestine(d) Large intestine
- 5.
What is the role of bile in digestion?
(a) Digest proteins(b) Digest carbohydrates(c) Emulsify (break up) fats into smaller droplets(d) Absorb nutrients
- 6.
What is the function of the large intestine?
- 7.
What are enzymes and what role do they play in digestion?
- 8.
Put the organs of the digestive system in the correct order that food travels through them:
(a) Mouth → Oesophagus → Small intestine → Stomach → Large intestine(b) Mouth → Stomach → Oesophagus → Small intestine → Large intestine(c) Mouth → Oesophagus → Stomach → Small intestine → Large intestine(d) Mouth → Oesophagus → Large intestine → Stomach → Small intestine
- 9.
Why are villi important in the small intestine?
- 10.
A person has their gall bladder removed. Which process would be most affected?
(a) Protein digestion(b) Carbohydrate digestion(c) Fat digestion(d) Water absorption
Answer key — P5 Science: Digestion
For parents. Step-by-step explanations for every question are free on brightbit.net.
- 1.(b) The breakdown of large food molecules into smaller, soluble ones
- 2.(c) Mouth
- 3.(b) Churns food and produces acid to begin protein digestion
- 4.(c) Small intestine
- 5.(c) Emulsify (break up) fats into smaller droplets
- 6.To absorb water from undigested food, and to form and store faeces before excretion
- 7.Enzymes are biological catalysts that speed up the chemical breakdown of food molecules during digestion
- 8.(c) Mouth → Oesophagus → Stomach → Small intestine → Large intestine
- 9.Villi increase the surface area of the small intestine, allowing more nutrients to be absorbed into the blood more quickly
- 10.(c) Fat digestion
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