Aerobic And Anaerobic Respiration Flashcards
During aerobic respiration what do the chemical reactions that occur do?
Use Glucose and oxygen
Release energy
What are the chemical reactions inside cells controlled by?
Enzymes
What is aerobic respiration?
Respiration that uses oxygen
Where does aerobic respiration take place?
Continuously in both plants and animals
Where do most of the reactions in aerobic respiration take place?
Inside mitochondria
What is the equation for aerobic respiration?
Glucose+oxygen –> carbon dioxide+water (+energy)
How is the energy released during respiration used?
- to build larger molecules from smaller ones
- in animals, to enable muscles to contract
- in mammals and birds, to maintain a steady body temperature in colder surroundings
- in plants, to build up sugars, nitrates and other nutrients into amino acids which are built up into proteins
What are the changes that take place during exercise?
The heart rate increases
The rate and depth of breathing increases
What do the changes in exercise do to the body?
- They increase the blood flow to the muscles, and so increase the supply of sugar and oxygen
- increase the rate of removal of CO2
What do muscles store glucose as?
Glycogen, which can then be converted back to glucose for use during exercise
When do we use anaerobic respiration?
If sufficient oxygen is reaching the muscles they use it to obtain energy
What is anaerobic respiration?
The incomplete breakdown of glucose and produces lactic acid
What is oxygen debt?
A temporary oxygen shortage in the muscles due to exercise
What does anaerobic respiration result in?
Oxygen debt that has to be repaid in order to oxidise lactic acid to carbon dioxide and water
As the breakdown of glucose is incomplete….
Much less energy is released than during aerobic respiration
