2.6 Flashcards
What does aerobic respiration use?
Oxygen
Where does aerobic respiration take place in our cells?
Mitochondria
What is the equation for aerobic respiration?
Glucose + oxygen
TO
Carbon dioxide +water +energy
Name 3 ways energy from respiration may be used in animals.
- keeps body temp constant
- contract muscles (glycogen)
- join small molecules to form large molecules (amino acids to protein)
How to plants use energy?
Convert sugars and nitrate into amino acids
What happens to your muscles during exercise ? What does this mean the muscles need to carry out aerobic respiration?
Contract
Good supply of glucose + oxygen
What happens to your heart during exercise? What does the mean happens to your breathing?
Heart rate increases so your depth of breathing increases
What does it mean if you have an increased heart rate? Relate to oxygen and glucose.
More oxygen and glucose to cells
Take away co2 quicker
What kind of exercise do you need to do for anaerobic respiration?
Vigorous e.g sprinting
During anaerobic exercise where is oxygen not reaching?
Working muscles
What is the equation for anaerobic respiration?
Glucose -> lactic acid + energy
What is anaerobic respiration?
Without oxygen
What is the downside of lactic acid build up?
Muscles stop contracting efficiently
What is lactic acid removed by?
The blood
Does aerobic or anaerobic release more oxygen?
Aerobic
What happens when lactic acid is broken down?
Releases energy
What is oxygen debt?
Oxygen paid back after anaerobic exercise
-amount of oxygen needed to oxidise lactic acid to make co2 and water
How would anaerobic respiration be described in terms of glucose?
Incomplete breakdown of glucose to produce lactic acid
What is muscle fatigue? What does the lead do?
When your muscles become tired after exercise. This means they stop contracting effectively.
