Revision

Question 1

What is a pathogen

Answer 1

It is a harmful or disease causing bacteria.

Question 2

Oesophagus?

Answer 2

The long tube between the mouth and the stomach

Question 3

Large intestine

Answer 3

The shorter wider tube that follows the small intestine

Question 4

Pancreas

Answer 4

A gland below the stomach which makes lots of chemicals

Question 5

Small intestine

Answer 5

The long thin winding tube that food goes through after it leaves the stomach

Question 6

Starch

Answer 6

IODINE

Question 7

Glucose

Answer 7

BENEDICTS

Question 8

Protein

Answer 8

BIURET

Question 9

Chemical digestion

Answer 9

The breaking down of large molecules into smaller molecules by enzymes

Question 10

Physical digestion

Answer 10

It happens in you mouth and stomach, the breaking down of large food particles into smaller ones

Question 11

Carbohydrates

Answer 11

Gives energy, bread and cerials

Question 12

Protein

Answer 12

Growth and repair, fish and chicken

Question 13

Minerals

Answer 13

Small amounts to maintain health, salt and milk

Question 14

Lipids (fats)

Answer 14

Gives energy and helps to store energy, nuts and butter

Question 15

Fibre

Answer 15

To help the food move through the digestive system, vegetables and bran

Question 16

Water

Answer 16

Needed for cells and body fluids, water and juice

Question 17

Vitamins

Answer 17

Small amounts to maintain health, fruits and vegetables

Question 18

Why is Vit C important?

Answer 18

To prevent scurvy and it’s good for growth and repair, it can be found in oranges

Question 19

Independent variable?

Answer 19

The thing you change

Question 20

Dependent variable?

Answer 20

The thing you measure

Question 21

Control variable?

Answer 21

The thing you keep the same

Question 22

Where does absorption occur?

Answer 22

In the small intestine

Question 23

Villi?

Answer 23

They increase the rate of absorption due to more surface area for nutrients to be absorbed

Question 24

Enzymes?

Answer 24

Proteins that speed up chemical reactions. E.g breakdown of large food molecules

Question 25

What enzymes?

Answer 25

Carbohydrase Protease Lipase

Question 26

Peristalsis?

Answer 26

Food moves through the digestive system, using muscular contractions to push food along

Question 27

Ingestion?

Answer 27

The process of food entering the mouth and going into the digestive system

Question 28

Digestion?

Answer 28

Breaking down large insoluble molecules into small soluble ones that we absorb into the blood

Question 29

Absorption?

Answer 29

The process by which small, soluble food molecules pass through the wall of the small intestine into the bloodstream

Question 30

Decomposers?

Answer 30

Fungi

Question 31

Decompose?

Answer 31

When you decompose something you break large molecules into smaller molecules by bacteria or fungi