What are some examples of things that need to be interchanged between an organism and its environment?
Except for heat, these exchanges can take place in two ways. What are the two ways?
Organisms evolve multiple features to aid transport. What are they?
What are the features of a specialised exchange surface?
How does gas-exchange take place in single-celled organisms?
What is the structure of the gas exchange surface in insects?
What are the three main ways in which respiratory gases in insects move in and out of the tracheal system?
How do respiratory gases move in and out of an insect by a diffusion gradient?
How do respiratory gases move in and out of an insect by mass transport?
How do respiratory gases move in and out of an insect by the ends of the tracheoles being filled with water?
How do respiratory gases leave an insects body?
What is the structure of the gas exchange system in fish (gills)?
Where are the gills found on a fish?
What is the counter current exchange principle?
Using the counter current exchange principle how much oxygen is taken up from water?
What is the structure of a leaf?
What adaptation of leaves allow for rapid diffusion?
What is the function of the stomata?
Where is the stomata found?
What cell controls the stomatal pore?
How does insects reduce water loss?
What are xerophytes?
What adaptations do xerophytes have in order to conserve water?
Why must the volume of oxygen absorbed and volume of carbon dioxide removed be high?
Why are the lungs located on the inside of the body?
What are the lungs supported and protected by?
What are the main parts of the mammalian lungs?
What are the lungs?
What is the trachea?
What is the bronchi?
What are the bronchioles?
What are the alveoli?
Pressure changes within the lungs are brought about by the movement of?
What are the stages of inspiration?
What are the stages of expiration?
Is expiration passive or active?
Is inhalation passive or active?