Food

Question 1

Why do we need food?

Answer 1

• To give us energy
• To protect against disease
• To keep us warm
• For repair of body cells
• For growth

Question 2

What is our food made of?

Answer 2

1. Carbohydrates
2. Fats
3. Protein
4. Vitamins
5. Minerals
6. Water

Question 3

Function of Carbohydrates

Answer 3

There are 2 types of carbohydrate needed in our diets: Starch and Sugars.

These provide us with energy
Fibre (Roughage): Passes through the digestive system to make sure it is in good working order and avoid constipation

Question 4

To test for starch

Answer 4

We use iodine to test for starch

Question 5

Functions of Fats

Answer 5

1. They store energy in the body
2. The layer of fat just under the skin gives our body insulation

Question 6

Sources of Fats

Answer 6

milk, fatty meat, dairy products

Question 7

Functions of Proteins

Answer 7

1. They are the main source of material that our cells need to grow
2. Proteins are needed for growth and repair.

Question 8

Sources of Proteins

Answer 8

milk, lean meat, fish, eggs, nuts

Question 9

Low levels of vitamin result in..

Answer 9

scurvy

Question 10

Functions of Vitamins

Answer 10

Vitamin D:

1. Formation of strong bones and teeth (i.e. Prevents rickets)
2. Formed by the action of sunlight on your skin
   Sources: dairy products

Question 11

Sources of Vitamins

Answer 11

citrus fruits, carrots

Question 12

Functions of Minerals

Answer 12

Iron: Needed by the blood to prevent people from becoming anaemic

Question 13

Sources of minerals

Answer 13

liver, cabbage

Question 14

Functions and Facts of Water

Answer 14

1. Makes up 60–70% of the human body
2. One can only survive a few days without it
3. It transports substances around the body
4. It removes waste from the body
5. Controls body temperature

Question 15

A Balanced Diet is…………

Answer 15

• one that contains the right amount of all food
types needed to stay healthy.
• dependant on the person’s age, sex, lifestyle and general health.