What is released during respiration?
Respiration is aerobic if it requires:
Which of these is a correct word equation for respiration?
The main difference between combustion and aerobic respiration is that:
1 On the diagram, the part labelled with the letter X is the:

Heart disease is caused by:
A poisonous substance in cigarette smoke stops red blood cells carrying oxygen. This substance is called:
How is carbon dioxide transported around the body?
During strenuous exercise:
Aerobic respiration in plants:
When carbon dioxide is added to limewater:
The drawing shows the underside of a leaf. What are the parts labelled X called?

Which organ do fish use for gas exchange?
Which substance does anaerobic respiration that humans & mammals only produce?
Anaerobic respiration can occur in a cell if there is a lack of:
For each molecule of glucose, how much energy does anaerobic respiration release compared with aerobic respiration?
One cause of excess post-exercise oxygen consumption is:

Explain an adaptation of the alveoli to allow gas exchange in humans.