8A - Food + Nutrition

Question 1

Diet

Answer 1

What you eat

Question 2

Why do we need nutrients in our body?

Answer 2

They provide raw materials for making other substances that our body needs

Question 3

What are the 7 nutrients?

Answer 3

Water, minerals, carbohydrates, lipids, protein, vitamins and fibre

Question 4

What are enzymes used for?

Answer 4

They are catalysts which help speed up food digestion

Question 5

What is the digestive system?

Answer 5

A process where large insoluble substances are turned into soluble ones

Question 6

Where is food digested?

Answer 6

Small intestine

Question 7

What helps absorb digested food?

Answer 7

Villi

Question 8

How do villi help absorb nutrients?

Answer 8

Villi are placed on top of folds in the small intestine which help increase the surface area so that more nutrients are able to pass through the blood quicker. They also have microvilli which further increase the surface area

Question 9

Test for starch

Answer 9

Iodine solution

Orangey-brown to blue black

Question 10

Test for glucose

Answer 10

Benedict’s test

Blue to yellow, green or red

Question 11

Test for protein

Answer 11

Biuret test

Blue to purple

Question 12

Test for fat

Answer 12

Fat test (using ethanol and water)
Colourless to cloudy white