22. The Respiratory System
Respiration
Multiple Choice
Multiple ChoiceWhen determining the directions that molecules will move in external and internal respiration:
A
Molecules will always move down the pressure gradient according to their individual partial pressures.
B
Molecules will move up the pressure gradient for internal respiration and down the pressure gradient for external respiration.
C
CO2 will always move up the pressure gradient, while O2 will always move down the pressure gradient.
D
Molecules will always move from the area of greatest total pressure to the area of lowest total pressure.
75
views
1
rank
Related Videos
Related Practice
Showing 1 of 11 videos