Food Tests And Digestion

Question 1

What does glucose do in the body?

Answer 1

It can be broken down during respiration to release energy

Question 2

What does protein do in the body?

Answer 2

It builds, replaces and repairs cells

Question 3

What do fats do in the body?

Answer 3

They form the cell membrane to build new cells

They help control what goes in and out of cells through the membrane

They are used as an energy store

Question 4

Name foods that are carbohydrates

Answer 4

Pasta, bread, potatoes, rice

Question 5

Name foods that contain protein

Answer 5

Eggs

Oats

Chicken

Question 6

Name foods that are high in fats

Answer 6

Meats

Cheese

Butter

Chocolate

Question 7

What does fibre do in the body

Answer 7

Helps digestion

Prevents constipation

Question 8

Name foods high in fibre

Answer 8

Pasta

Granary bread

Brown rice

Question 9

What does calcium do in the body

Answer 9

A mineral that maintains and builds strong bones and teeth

Question 10

What will happen if there is not enough iron in the body?

Answer 10

Without enough iron your body cannot produce haemoglobin in your red blood cells which transports oxygen for respiration and to release energy.

Question 11

What chemical do we use to test for starch?

Answer 11

Iodine solution

Question 12

What chemical do we use to test for protein?

Answer 12

Biuret solution

Question 13

What chemical do we use to test for lipids?

Answer 13

Ethanol and water

Question 14

What chemical do we use to test for sugar/glucose?

Answer 14

Benedicts and heat

Question 15

What colour change happens if starch is present?

Answer 15

Orange/brown to blue/black

Question 16

What colour change happens if protein is present?

Answer 16

Blue to purple

Question 17

What colour change happens if lipids are present?

Answer 17

Clear to cloudy white

Question 18

What colour change happens if sugar/ glucose is present?

Answer 18

Blue to brick red

Question 19

What safety precautions should we take when carrying out biochemical tests?

Answer 19

Wear safety goggles

Clear spillages immediately

Question 20

What is an enzyme?

Answer 20

A biological catalyst which speeds up a chemical reaction without being used up.

Question 21

What do enzymes do in the body?

Answer 21

They break down larger chains into smaller molecules so they can be absorbed into the blood stream.

Question 22

Name the three types of enzymes in digestion?

Answer 22

Protease

Carbohydrates (amylase)

Lipases

Question 23

What is digestion?

Answer 23

The process where large molecules are broken down into smaller molecules to be absorbed into the blood.

Question 24

Adaptations of small intestine?

Answer 24

The wall of the small intestine makes a large surface area

Very thin walls

Good blood supply

Question 25

Where is protein digested?

Answer 25

Stomach and small intestine

Question 26

Where is amylase produced?

Answer 26

Salivary glands, pancreas and small intestine

Question 27

Where is protease produced?

Answer 27

Small intestine, pancreas and stomach

Question 28

Where is bile produced?

Answer 28

Stomach