Digestion - Science

Question 1

Carbohydrates are used for what?

Answer 1

energy

Question 2

Proteins are used for what?

Answer 2

cell growth and repair

Question 3

Lipids (fats and oils) are used for what?

Answer 3

energy (storage)

Question 4

Vitamins are used for what?

Answer 4

Vital processes inside the body

Question 5

Minerals are used for what?

Answer 5

Iron for healthy blood, calcium for strong teeth and bones

Question 6

Fibre is used for what?

Answer 6

Moving food through digestive system

Question 7

Water is used for what?

Answer 7

All chemical reactions in body

Question 8

What causes obesity?

Answer 8

Taking in more energy from food than is used

Question 9

What are the consequences of obesity?

Answer 9

Health problems - e.g. high blood pressure, heart disease.

Question 10

What causes starvation?

Answer 10

Lack of food

Question 11

What are the consequences of starvation?

Answer 11

Slow growth, greater risk of infection, irregular periods

Question 12

Scurvy and a lack of vitamin C are examples of what?

Answer 12

Deficiency diseases

Question 13

The process of breaking down food so nutrients can be absorbed into the blood is called….

Answer 13

digestion

Question 14

Biological catalysts that speed up chemical reactions in the body are known as……

Answer 14

enzymes

Question 15

What is the enzyme that digests carbohydrates?

Answer 15

carbohydrase

Question 16

What is the enzyme that digests proteins?

Answer 16

protease

Question 17

What is the enzyme that digests lipids?

Answer 17

lipase

Question 18

What is absorbed in the large intestine?

Answer 18

water

Question 19

What is absorbed in the small intestine?

Answer 19

digested food molecules

Question 20

What is the role of bile?

Answer 20

Breaks large fat droplets into smaller droplets

Question 21

In which part of the digestive system is faeces (poo) stored?

Answer 21

Rectum

Question 22

Where is bile produced?

Answer 22

Liver

Question 23

Where is bile stored?

Answer 23

Gall bladder

Question 24

How are villi adapted for absorbtion?

Answer 24

Large surface area, good blood suply, thin outer layer of cells

Question 25

What do we use to test for simple sugars?

Answer 25

Benedicts solution and heat

Question 26

What do we use to test for for starch?

Answer 26

Iodine

Question 27

What do we use to test for proteins?

Answer 27

Biuret solution

Question 28

A positive result with benedicts solution turns….

Answer 28

Green, yellow, orange, brick red (in order of quantity)

Question 29

A positive result with biuret solution turns….

Answer 29

purple

Question 30

A positive result with starch solution turns….

Answer 30

blue/black