Chapter 9 Flashcards
Aerobic respiration can be summarised as;
Glucose + oxygen > carbon dioxide + water (Energy transferred to the environment)
What is the need for respiration?
Living cells need energy to carry out the basic functions of life. Such as in building functions, building up and braking down molecules.
Maintaining a constant body temperature.
In animals energy from respiration is needed to make the muscles contract
What is the symbol equation aerobic respiration?
C6H12O6 + 6O2 > 6CO2 + 6H2O
The response to exercise,
- your heart rate increases and the arteries widen increasing the flow of oxygenated blood to muscles.
- your breathing rate increases and you breathe more deeply meaning you breathe more frequently resulting in more oxygenated blood reaching your muscles.
- Glycogen is converted back to glucose to supply cells for increased cellular respiration
Why does cellular respiration increase?
As during exercise the muscles are contracting more meaning they need more energy, therefore cellular respiration takes place to supple them with this.
Why does anaerobic respiration take place?
Anaerobic respiration takes place when the blood can’t supply oxygen to the muscles fast enough
What does oxygen debt result in?
The waste lactic you produce during anaerobic respiration is a problem. You cannot simply get rid of Lactic acid by breathing it out as you can with carbon dioxide. As a result, when the exercise is over, lactic acid acid has to be broken down to produce carbon dioxide and Water.
