B2.6 - Aerobic And Anaerobic Respiration Flashcards
What is the word equation for aerobic respiration?
Glucose + oxygen –> water + carbon dioxide + ENERGY
What is released as a result of respiration?
Energy.
Where do most of the reactions for respiration take place?
The mitochondria.
What is broken down in order for respiration to occur?
Glucose.
What can the energy released from respiration be used for? (4)
- To build up larger molecules from smaller ones.
- To allow muscles to contract.
- To keep a steady body temperature.
- Plants can build sugars, nitrates and other nutrients into amino acids, which are then built up into proteins.
What changes occur in the body when you exercise? (2)
- The heart rate increases.
2. The rate and depth of breathing increases.
Why does the blood flow to the muscles increase during exercise? (2)
- To increase the supply of glucose and oxygen for respiration.
- To increase the rate of removal of carbon dioxide.
What happens to the glycogen stored in the muscles during exercise?
It is converted back into glucose for respiration.
What do the muscles store glucose as?
Glycogen.
What do the muscle cells do if they are receiving insufficient oxygen during exercise?
Respire anaerobically.
What is the word equation for anaerobic respiration?
Glucose –> lactic acid + ENERGY
Which type of respiration releases the least energy?
Anaerobic respiration.
What is an oxygen debt?
When your body has to “repay” the oxygen to the muscles that didn’t get the oxygen in time during exercise.
How does the blood remove lactic acid?
By oxidising it to carbon dioxide and water.
What happens when muscles are subjected to vigorous exercise over a long period of time?
They become fatigued.
