WorksheetsRespiration
Total questions: 16
Worksheet time: 5mins
The percentage of oxygen in the air breathed in is .......
0.03%
1%
21%
0.03%
The percentage of oxygen in the air breathed out is .......
4%
18%
21%
79%
The percentage of carbon dioxide in inhaled air is how much?
0.03%
4%
21%
79%
The percentage of carbon dioxide in exhaled air is about how much?
3%
16%
21%
79%
The percentage of which of these gases of the air breathed in remains unchanged in the air that we breathe out?
Carbon dioxide
Nitrogen
Oxygen
Water vapour
Which is the correct order showing the route that oxygen takes to enter the blood?
Alveoli, bronchioles, bronchi, trachea
Bronchi, bronchioles, trachea, alveoli
Trachea, alveoli, bronchi, bronchioles
Trachea, bronchi, bronchioles, alveoli
Gas exchange takes place in the alveoli. Which is not true?
The alveoli have a moist surface
The alveoli have a small surface area
The alveoli have a very good blood supply
The alveoli have very thin permeable walls
Oxygen passes from the alveoli into the blood. How is it transported?
By blood plasma
By dissolving in water
By red blood cells
By white blood cells
Air can enter and leave the lungs because .......
of pressure changes
the volume of the thorax (chest) remains the same
there is gas exchange
there is no pressure change
Which two substances are needed for aerobic cellular respiration to take place?
Glucose and carbon dioxide
Glucose and water
Oxygen and glucose
Oxygen and water
Cellular respiration occurs in .......
only cells in the arms and legs
only heart cells
only muscle cells
all cells
The diaphragm is .......
a lining of the lungs
a muscle which connects the ribs
a sheet of muscle under the lungs
the windpipe
When we exhale which one of the following is NOT correct?
The volume of the thorax decreases
The air is forced out of the lungs
The diaphragm relaxes
The rib muscles contract
When we inhale which one of the following is NOT correct?
More space is formed in the thorax (volume increases)
The air pressure in the chest (thorax) increases
The diaphragm contracts
The rib muscles contract
Which of the following is NOT true about the effect of exercise?
Breathe more quickly
Heart beats faster
Less oxygen and glucose get to the muscles
Pulse rate increases
Which of the following are the products of cellular respiration?
Energy, carbon dioxide and water
Energy, glucose and carbon dioxide
Energy, oxygen and glucose
Energy, oxygen and water
