B9 Respiration Flashcards
What type of reaction is aerobic respiration?
Exothermic
What is the word equation for aerobic respiration?
Glucose + Oxygen = Carbon dioxide + Water + Energy
What is aerobic respiration?
An important enzyme controlled process in living things which transfers energy for cells to use.
Where does aerobic respiration take place?
In the mitochondria.
What are the three main changes which occur during exercise?
An increase in the heart rate,
Glycogen stores in the muscles are converted to glucose for cellular respiration,
The flow of oxygenated blood to the muscles increases.
Explain why a person’s breathing rate initially remains high after they have completed a 100m sprint. (4 marks)
During aerobic respiration glucose is not completely oxidised, which causes a build up of lactic acid. Producing carbon dioxide and water will repay the oxygen debt and in order to get carbon dioxide the person must breathe which will result in a high breathing rate.
