Respiration Flashcards
What is produced from aerobic respiration?
Carbon dioxide and water
Where do these reactions take place?
The mitochondria
What may the energy from aerobic respiration be used for?
- building larger muscles
- enable muscle contraction
- maintain constant body temp
- to build nitrates, sugars and other nutrients info amino acids
What happens when you dx recuse more?
You need more energy for muscle contraction therefore the rate of oxygen and glucose reaching the cells must be increased
Carbon dioxide waste must also be removed quicker
What happens as heart rate increases?
Blood vessels widen which allows more blood containing oxygen and glucose to the cells
What else increases as heart rate increases?
Depth of breath which allows a greater uptake of oxygen
What do muscles store glucose as?
Glycogen
What is anaerobic respiration?
When muscles get tired and stop contracting properly
What is the cause of anaerobic respiration?
When the muscles aren’t getting enough oxygen and glucose
What happens to the glucose in anaerobic respiration?
It isn’t broken down properly and lactic acid is produced therefore less energy is released
What is the cause of muscles fatigue?
The build up of lactic acid
What removes the build up of lactic acid?
The blood flowing through removes it
Why is anaerobic respiration inefficient?
Because the breakdown of glucose is incomplete and instead of carbon dioxide and water being produced lactic acid is produced
What is the oxygen debt?
As more oxygen is required to break down the lactic acid the extra oxygen required to do this is the oxygen debt
What does oxygen do to lactic acid?
It oxidises the lactic acid into Carbon dioxide and water
