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Worksheets10.2 Respiration and gas exchange
Total questions: 34
Worksheet time: 18mins
The average person can only hold their breath for about 18 seconds.
True
False
Only .............................. of the air is oxygen the rest is mainly nitrogen.
12%
21%
79%
A lung full of pure air supplies more oxygen than a lung full of pure oxygen.
True
False
Breathed-out air has ................................................................. breathed-in air.
equal amounts of oxygen and carbon dioxide as
less carbon dioxide and more oxygen than
less oxygen and more carbon dioxide than
Breathing renews the air in the lungs.
True
False
Breathing renews the air in the lungs. It keeps the ..................................... concentration in the alveoli as high as possible to make diffusion into the blood as fast as possible.
nitrogen
carbon dioxide
oxygen
A chemical reaction in which cells all over your body use oxygen to release energy from food molecules such as glucose.
Anaerobic respiration
Aerobic respiration
Cells use the energy from respiration to....
To keep themselves alive.
Stay warm.
Grow.
Reproduce.
Move.
Muscle cells use .......................... the energy from respiration for movement.
a lot of
fewer amounts of
When you sit, you need ................. oxygen than when you run.
less
more
When you start to exercise your body’s demand for energy goes down.
True
False
A ................................. is a special graph that shows how the volume of air in the lungs changes as you breathe in and out.
spirogram
bar chart
bubble chart
When you exercise, your lungs increase gas exchange by breathing faster and deeper.
True
False
The higher you go – Mountains - the ...........................oxygen there is in a lungful of air.
less
more
Most people- their bodies - can adapt to low oxygen levels by:
Making more red blood cells.
Growing extra capillaries in their muscles.
Having fewer capillaries in their muscles.
Making less red blood cells.
People whose ancestors lived at high altitudes are adapted to the lack of oxygen there.
True
False
The diagram below shows the main organ in the respiratory system.
Choose the correct letter for alveoli
A
B
C
D
E
The diagram below shows the main organ in the respiratory system.
Choose the correct letter for bronchiole
A
B
C
D
E
The diagram below shows the main organ in the respiratory system.
Choose the correct letter for trachea
A
B
C
D
E
The diagram below shows the main organ in the respiratory system.
Choose the correct letter for lung
A
B
C
D
E
The diagram below shows the main organ in the respiratory system.
Choose the correct letter for bronchus
A
B
C
D
E
Name the part of the lungs that matches this description:
small air spaces where gas exchange takes place
Alveoli.
Bronchus.
Bronchioles
Name the part of the lungs that matches this description:
A reinforced tube that takes air down to one lung
Alveoli.
Bronchus.
Bronchioles
Name the part of the lungs that matches this description:
Small tubes that lead air to millions of tiny air spaces.
Alveoli.
Bronchus.
Bronchioles
The model lung in the diagram can be used to show how air is moved in and out of the lungs.
Which two parts of the lungs does the hollow tube represent?
Trachea
The diaphragm.
Bronchi.
The model lung in the diagram can be used to show how air is moved in and out of the lungs.
What does the rubber sheet represent?
Trachea
The diaphragm.
Bronchi.
When your chest expands, air moves into your lungs. Write the letters A–E in the correct order to describe the path the air takes.
alveoli bronchi trachea bronchioles nose
nose, trachea, bronchioles, bronchi, alveoli
nose, trachea, bronchioles, alveoli, bronchi
nose, trachea, bronchi, bronchioles, alveoli
The diagram below shows how gas exchange takes place in the lungs.
Name parts X
capillary
trachea
alveolus
The diagram below shows how gas exchange takes place in the lungs.
Name parts Y
capillary
trachea
alveolus
The diagram below shows how gas exchange takes place in the lungs.
Name gas B
oxygen
carbon dioxide
nitrogen
The diagram below shows how gas exchange takes place in the lungs.
Name gas A
oxygen
carbon dioxide
nitrogen
Processes A, B, and C all involve oxygen and carbon dioxide.
Choose the correct letter to match this description:
A moving air in and out of the lungs
A) gas exchange
B) breathing
C) respiration
Processes A, B, and C all involve oxygen and carbon dioxide.
Choose the correct letter to match this description:
The process that takes place in alveoli.
A) gas exchange
B) breathing
C) respiration
Processes A, B, and C all involve oxygen and carbon dioxide.
Choose the correct letter to match this description:
A chemical reaction that takes place in every cell.
A) gas exchange
B) breathing
C) respiration
