Respiration (aerobic and anaerobic) Flashcards
What does respiration do?
Respiration releases energy for cells from glucose
Two types of respiration
Aerobic and Anaerobic
Define Aerobic respiration
Aerobic respiration is the form of respiration which uses oxygen.
What is the equation for AEROBIC respiration?
glucose + oxygen → carbon dioxide + water (+ energy)
“Most of the reactions involved in aerobic respiration happen inside ……….”
….mitochondria, tiny objects inside the cytoplasm of the cell. The reactions are controlled by enzymes.
During exercise the muscles cells have to respire more meaning that…
Oxygen and glucose must be delivered to them more quickly
Waste carbon dioxide must be removed more quickly
This is achieved by increasing the heart rate, rate of breathing and the depth of breathing.
The muscles store glucose as…
The muscles store glucose as glycogen. This can then be converted back to glucose for use during exercise.
What is anaerobic respiration?
Anaerobic respiration involves the incomplete breakdown of glucose.
The equation for ANAEROBIC respiration is…
glucose → lactic acid (+ little energy)
How is the lactic acid removed from fatigued muscles?
The lactic acid is removed from the muscles by blood flowing through them.
Why do fit people carry out exercise better?
Their pulse rate is likely to return to normal more quickly after exercise.
What is oxygen debt?
This is the amount of oxygen needed to oxidise lactic acid to carbon dioxide and water.
