Biology Unit 1 (Digestion, Breathing, Gas Exchange, Skeleton, Muscles)

Question 1

Why does the body need protein?

Answer 1

For growth and repair

Question 2

Why does our body need carbohydrates?

Answer 2

For energy

Question 3

Why does food need to be digested?

Answer 3

To make it small enough to be absorbed into the blood

Question 4

Where is food absorbed?

Answer 4

The small intestine

Question 5

What is deficient if someone has scurvy?

Answer 5

Vitamin C

Question 6

What is starch digested into?

Answer 6

Sugar

Question 7

Which enzyme digests starch?

Answer 7

Amylase

Question 8

What are the 5 jobs for the skeleton?

Answer 8

Movement, support, making blood cells, protection, shape

Question 9

What connects bones and muscles

Answer 9

Tendons

Question 10

What connects bones to bones

Answer 10

Ligaments

Question 11

What muscles contract to bend the arm?

Answer 11

Biceps

Question 12

What muscles contract to straighten the arm?

Answer 12

Triceps

Question 13

How does oxygen get from the alveoli into the blood?

Answer 13

By diffusion

Question 14

Where does gas exchange happen?

Answer 14

In the alveoli

Question 15

What are the organs in the digestive system?

Answer 15

Mouth, oesophagus, stomach, small intestine, large intestine, rectum, anus

Question 16

What is the purpose of fats and lipids?

Answer 16

Energy store

Question 17

What do you need minerals and vitamins for?

Answer 17

Needed in small amounts to stay healthy

Question 18

What is fibre used for?

Answer 18

Helps the digestive system

Question 19

What is the purpose of water?

Answer 19

To keep our cells hydrated

Question 20

….goes in and …. Goes out (gas exchange)

Answer 20

Oxygen, carbon dioxide

Question 21

What is ventilation?

Answer 21

Air going into and out of the lungs

Question 22

Gas exchange system?

Answer 22

Trachea, bronchi, bronchi-hole, air sacks, alveoli, diaphragm, intercostal muscles, ribs

Question 23

Materials at the end of bones to protect it from wearing away?

Answer 23

Cartilage

Question 24

Pair of muscles that work against each other to move the bone?

Answer 24

Antagonistic pairs

Question 25

The straightening of joints

Answer 25

Extension

Question 26

A substance that affects how the body works?

Answer 26

Drugs

Question 27

Joints diagram

Answer 27

Bone, cartilage, synovial fluid, ligaments, synovial membrane

Question 28

What is the mouth for (digestion)

Answer 28

Physically breaks up food and digests some carbohydrates

Question 29

What is the oesophagus for (digestion)

Answer 29

Connects the mouth to the stomach

Question 30

What is the stomach for (digestion)

Answer 30

Mixes the food and destroys pathogens eg bacteria with hydrochloric acid

Question 31

What is the small intestine for (digestion)

Answer 31

Site of most digestion and absorption into the blood

Question 32

What is the liver for (digestion)

Answer 32

Produces bile which helps in fat digestion

Question 33

What is the pancreas for (digestion)

Answer 33

Produces digestive enzymes which break up large food molecules

Question 34

What is the large intestine for (digestion)

Answer 34

Absorbs water leaving a solid stool