Cellular Respiration Flashcards
What is cellular respiration?
A biochemical process that occurs in the cytosol and
mitochondria and metabolises glucose aerobically or anaerobically to
release ATP.
What is ATP?
Adenosine Triphosphate
What is the first stage of cellular respiration?
Glycolysis
What is Glycolysis?
– Occurs in the cytoplasm
– Converts glucose to 2 pyruvate molecules and produces 2 ATP molecules
What are the three stages of aerobic respiration?
- Glycolysis
- Krebs Cycle
- Electron Transport chain
What happens in the Krebs Cycle?
– Pyruvate molecules enter mitochondria
– Pyruvate is converted into carbon dioxide and water
– The remaining 34 ATP molecules are produced
What is the equation for aerobic cellular respiration?
C6H12O6 + 6O2 −> 6CO2 + 6H2O + 36 ATP
What is the equation for alcohol fermentation?
C6H12O6 −> 2CH3CH2OH + 2CO2 + 2 ATP
What is the equation for lactic acid fermentation?
C6H12O6 −> 2CH3CH(OH)COOH + 2 ATP
When is anaerobic cellular respiration used?
When the muscles do not have access to oxygen so they produce small amounts of their own.
Why can anaerobic respiration be used for only a short time?
Because the muscles are in oxygen debt from producing their own energy, so oxygen must be replenished before they can continue to work.
Which form of anaerobic respiration is used by animals?
Lactic acid fermentation
