Food And Diet

Question 1

What are the 5 main food nutrients?

Answer 1

Carbohydrates, minerals, fats, proteins and vitamins

Question 2

Name carbohydrates

Answer 2

Sugars
Starch
Cellulose

Question 3

What does sugar do?

Answer 3

Provides energy

Question 4

What do starches do?

Answer 4

Provides energy

Question 5

What does cellulose do?

Answer 5

Prevents constipation

Question 6

What are proteins used for?

Answer 6

Repair cells
Growth
Make Hair and muscle

Question 7

What do fats do?

Answer 7

Provide heat, protection of delicate organs and temperature regulation

Question 8

Name the vitamins

Answer 8

Vitamin C and vitamin D

Question 9

What does vitamin C do?

Answer 9

For heathy skin and gums.

Lack of vitamin C can cause scurvy

Question 10

What does vitamin D do?

Answer 10

Strong bones and teeth.

Lack of vitamin D can cause rickets

Question 11

Name the minerals?

Answer 11

Iron

Calcium

Question 12

What does iron do?

Answer 12

Needed to make red blood cells

Question 13

What does calcium do?

Answer 13

For healthy bones and teeth

Question 14

Briefly describe how you test for starch

Answer 14

Place starch solution in test tube.
Add iodine
Starch solution should change colour

Question 15

Briefly describe how you test for the presence of glucose

Answer 15

Make a water bath
Put a test tube of glucose solution and Benedictus solution in it.
Heat until colour changes

Question 16

Briefly describe how you test for the presence of protein

Answer 16

Place milk in a test tube
Add sodium hydroxide (a few drops)
It should turn purple

Question 17

Briefly describe how you test for the presence of fat

Answer 17

Use brown paper.
Place butter on it.
Leave
You should be able to see through it

Question 18

How do plants make food?

Answer 18

Photosynthesis