Breathing

Question 1

What do cells need to do to release energy

Answer 1

Respire

Question 2

How is energy used in organisms

Answer 2

To stay alive, to make new substances and to help them move

Question 3

What respiration uses oxygen

Answer 3

Aerobic respiration

Question 4

Formula for aerobic respiration

Answer 4

Glucose + oxygen - carbon dioxide + water

Question 5

How is glucose supplied

Answer 5

Digestion of carbohydrates

Question 6

What is glucose absorbed into the blood by and dissolved into.

Answer 6

Absorbed by the small intestine and carried around the body dissolved in the plasma of the blood

Question 7

What happens after the blood is dissolved into the plasma

Answer 7

The blood travels through blood vessels and is pumped by the heart

Question 8

What forms the circulatory system

Answer 8

Heart and blood vessels

Question 9

What is on the end of the trachea

Answer 9

Bronchus

Question 10

What are alveoli

Answer 10

Tiny pockets in the air sac

Question 11

Where are air sacks

Answer 11

Inside the lungs

Question 12

Where are the alveoli

Answer 12

Inside the air sacks

Question 13

What goes into the alveolus from the capillaries

Answer 13

Carbon dioxide goes into the alveolus to be breathed out

Question 14

What enters the capillary

Answer 14

Oxygen from inhaled air enters the capillary

Question 15

How many chambers are in the heart

Answer 15

4

Question 16

What flows through the capillaries

Answer 16

Red blood cells

Question 17

What great vets the lungs a large surface area

Answer 17

The alveoli

Question 18

Why do lungs have a large surface area

Answer 18

So that oxygen can quickly diffuse from the air inside the lungs into the blood contained in capillaries

Question 19

What makes it easy for oxygen to diffuse into blood in the capillaries

Answer 19

The walls of the alveoli are only one cell thick

Question 20

Once oxygen has diffused into the blood, how is it carried round

Answer 20

Carried round by red blood cells to capillaries around the body

Question 21

What leaks out of the capillaries

Answer 21

Tissue fluid

Question 22

What does tissue fluid contain

Answer 22

Oxygen and glucose

Question 23

What diffuses out of the blood in the lungs

Answer 23

The dissolved carbon dioxide diffuses out of the blood and into the air in the lungs

Question 24

What do we breathe out more

Answer 24

Carbon dioxide

Question 25

Do we breathe in or breathe out more carbon dioxide

Answer 25

Out more

Question 26

What is done to the carbon dioxide to the lungs

Answer 26

Excerted

Question 27

What is gas exchange

Answer 27

Oxygen diffusing into the blood and carbon dioxide diffusing out of the blood

Question 28

Composition of inhaled air - nitrogen gas

Answer 28

78%

Question 29

Composition of exhaled air- nitrogen gas

Answer 29

78%

Question 30

Composition of inhaled air - oxygen gas

Answer 30

21%

Question 31

Composition of exhaled air - oxygen gas

Answer 31

16%

Question 32

Composition of inhaled air- carbon dioxide

Answer 32

0.03 %

Question 33

Composition of exhaled air- carbon dioxide gas

Answer 33

4%

Question 34

Composition of inhaled air - water vapour

Answer 34

Variable

Question 35

Composition of exhaled air - water vapour

Answer 35

More

Question 36

What happens when you exercise

Answer 36

Breathing rate and pulse rate increase

Question 37

why does your breathing a pulse rate increase when you exercise

Answer 37

because your cells need more oxygen and glucose for respiration

Question 38

what happens in emphysema (cant get enough oxygen)

Answer 38

feel short of breath and tired.

Question 39

what happens if too little oxygen gets to cells

Answer 39

the cells cannot release energy from food so they die

Question 40

how under water organisms breathe

Answer 40

gills take oxygen out of the water. the oxygen from the water diffuses into the leaves of underwater plants.