Respiration Flashcards
1
Q
What happens to the Pyruvate in ANEROBIC CONDITIONS?
A
- Pyruvate is Converted into L-Lactate by accepting Hydrogen atoms from the NADH
- This is Catalysed by LDH (Lactate Dehydrogenase)
- This regenerates NAD+
- This allows for glycolysis to continue
- There is no oxygen to act as (final) hydrogen acceptor
- Therefore the Link reaction and Krebs Cycle cannot occur
- net ATP of 2
2
Q
Suggest how seals respire underwater for a long time?
A
- Lower metabolic rate
- High tolerance of CO2
- More NAD to accept (H)
- More pH buffers
- Blood is diverted to vital organs
- Lots of Haemoglobin to hold onto more oxygen molecules
3
Q
Where does Oxidative phosphorylation occur?
A
-inner membrane of the mitochondria (Cristae)
4
Q
What is the role of ATP in the cell?
A
- Energy Currency
- Universal energy molecule
- Immediate source of energy
- ATP hydrolysed into ADP releasing energy
- Small packets of energy to (prevent cell damage)
