Food & Digestion

Question 1

What nutrients and other substances are found in food?

Answer 1

Carbohydrates, fats, vitamins, minerals, proteins, fibre and water

Question 2

Why is water important?

Answer 2

75% of the body is water and it also keeps you hydrated.

Question 3

Why is fibre important?

Answer 3

It keeps you regular

Question 4

What is a balanced diet?

Answer 4

A diet with a variety of all 7 types of substances in the right amounts. Maybe you have to eat more of one and not so much of another. This depends on your daily activity.

Question 5

Why some people need more food than others?

Answer 5

Some people do more sport than others so they will need more carbohydrates. The ones ones who don’t do so much sport won’t need so much carbohydrates.

Question 6

Carbohydrates

Answer 6

Potatoes, cereal, pasta, bread

Question 7

Vitamins

Answer 7

Fruit + vegetables, cereal

Question 8

Water

Answer 8

Water

Question 9

Fats

Answer 9

Butter, oil, cream, milk, peanuts

Question 10

Minerals

Answer 10

Meat, milk, cereal

Question 11

Fibre

Answer 11

Cereal, vegetables

Question 12

Proteins

Answer 12

Meat,fish, eggs, cheese, soya beans

Question 13

Carbohydrates are needed for…

Answer 13

Energy

Question 14

Fats are needed for…

Answer 14

Store of energy

Question 15

Water is needed to…

Answer 15

Keep you hydrated

Question 16

Fibre is needed because…

Answer 16

It keeps you regular

Question 17

Minerals are needed to…

Answer 17

Keep teeth strong

Question 18

Proteins are needed for…

Answer 18

Building and repairing cells

Question 19

Vitamins are needed to…

Answer 19

Keep things ticking over

Question 20

Where are the organs in the digestive system (up to down)

Answer 20

Mouth
Oesophagus 
Stomach 
Large intestine
Small intestine
Rectum

Question 21

Function of large intestine

Answer 21

Absorb water

Question 22

Job of the rectum

Answer 22

Farces are stored here

Question 23

Job of the oesophagus

Answer 23

It takes food to the stomach

Question 24

Job of the stomach

Answer 24

More enzymes are added, to complete digestion. Soluble food is sorbed here

Question 25

Job of the mouth

Answer 25

Mechanical digestion happens here (teeth)

Question 26

2 ways to break down food

Answer 26

• chemical digestion: enzymes (biological scissors)

- mechanical digestion: teeth (cut up food)

Question 27

Where Is digested food taken to

Answer 27

The bloodstream

Question 28

How are enzymes affected by temperature or pH

Answer 28

When the pH or temperature of an enzyme changes too much it will not work because it has denatured, which weans changed shape so it doesn’t cut.

Question 29

How is digested food carried around the body?

Answer 29

By the veins, arteries and capillaries which all contain inside them water in the blood.

Question 30

How is digested food used

Answer 30

In energy:

• to walk
• to think
• to speak

Question 31

What are the names and jobs of the blood vessels in the circulatory system?

Answer 31

Villus: it carries blood around tissues/organs
Artery: it carries blood away from the heart
Vein: it carries blood towards the heart

Question 32

Result for the food test of fat

Answer 32

PR- grease spots or a translucent dry

NR- no stain/mark

Question 33

Result for the food test of sugar

Answer 33

PR- change of colour (orange)

NR- no colour change. It stays transparent blue

Question 34

Result for the food test of starch

Answer 34

PR- chance of colour (Black)

NR- no colour change (orange/brown)

Question 35

Result for the test food of protein

Answer 35

PR- colour change (lilac/purple)

NR- no change of colour. It stays blue