Formative Practice 3.2 – Science Form 2 Chapter 3


Question 1:
What is meant by a balanced diet?

Answer:
A balanced diet is a diet that contains all classes of food required by the body in the right quantities.


Question 2:
State the factors that influence calorific requirement.

Answer:
Gender, body size, health condition, age, work and climate


Question 3:
Compare the energy requirements of a 50-year-old woman and 50-year-old man.

Answer:
The energy needs of a 50-year-old man is higher because he generally does more heavy work compared to a 50-year-old woman.


Question 4:
Give the definition for calorific value of food.

Answer:
Calorific value of food is the total energy that is released when 1 g of food burns completely in the body.


Question 5:
Suraya is a long-distance runner. She has breakfast as shown in the photographs below before going for a practice session. What is the calorific value of the food consumed by Suraya? In your opinion, has Suraya taken a balanced meal?




Answer:
Total calories consumed by Suraya:



Yes, because the breakfast eaten by Suraya has all the food classes and is suitable for the activities she does.


Question 6:
Mr. Robert originates from Switzerland and now lives in Malaysia. Mr. Robert works as a diplomatic officer. He finds that his daily food requirements are less compared to when he was in Switzerland. Why?

Answer:
The climate in Switzerland is different from Malaysia. The temperature in Switzerland is much lower. More calories are required to maintain the body temperature there.

Leave a Comment