Respiration Flashcards
4 stages of respiration
- Glycolysis
- Link reaction
- Kerbs cycle
- Oxidised phosphorylation
Where does glycolysis occur
Cytoplasm
Where does link reaction occur
Matrix
Where does Krebs cycle occur
Matrix of mitochondria
Where does oxided phosphorylation occur
Cristae
Products from glycolysis
X2 pyruvate x2 ATP x2 NADH
Products from link reaction
X2 acetylecoenzyme A
X2 CO2
X2 NADH
Products of Krebs cycle
X6 NADH
X2 FADH
X4 CO2
Describe how oxidation takes place in glycolysis and in the Krebs cycle
- Removal of hydrogen
- By dehydrogenase enzyme
- Reduced NAD formed (NADH)
- Krebs cycle FAD used
Water is a waste product if aerobic respiration. Describe how water is formed at the end of aerobic respiration
- Oxygen is final electron acceptor
- Combine with electrons and protons
Describe the roles of the coenzymes and carrier proteins in the synthesis of ATP
- Electrons transferred from coenzyme to coenzyme
- Energy released as electrons passed down ETC
- Energy used to synthesis ATP from ADP and Pi
Describe how ATP is made in mitochondria
- ATP produced in Krebs cycle
- Krebs cycle and link reaction produces NADH and FADH
- Electrons released from reduced NAD
- Electrons travel down ETC
- Energy released
- Protons pumped into intermembrane space
- ADP + Pi = ATP
- ATP synthases
Describe the events of oxidative phosphorylation
- NAD and FAD reduced
- ETC on cristaes
- H ions transferred from coenzyme to coenzyme
- Energy released as electrons pass on
- H ions pumped into intermembrane space
- Energy used to synthesis ATP from ADP and Pi
What is pyruvaye converted into if respiration is only anaerobic
Ethonol and lactate
Using reduced NAD
