Respiration Flashcards
What happens during respiration?
Energy is released for cells from glucose.
What is the difference between aerobic and anaerobic respiration?
Aerobic respiration needs oxygen whereas anaerobic respiration does not.
What is the equation for aerobic respiration?
glucose + oxygen → carbon dioxide + water (+ energy)
How is energy used?
To enable the muscles to contract so that animals can move.
During exercise, the muscle cells respire more than they do at rest. What does this mean?
Oxygen and glucose must be delivered to them more quickly
Waste carbon dioxide must be removed more quickly
Why do muscles store glycogen?
So that it can be converted back to glucose during exercise.
What does anaerobic respiration involve?
The incomplete breakdown of glucose.
Why do muscles become fatigued after long periods of vigorous movement?
There is a build up of lactic acid in the muscles from anaerobic respiration. The lactic acid is removed from the muscles by blood flowing through them.
What is oxygen debt?
This is the amount of oxygen needed to oxidise lactic acid to carbon dioxide and water. The existence of an oxygen debt explains why we continue to breathe deeply and quickly for a while after exercise.
