Respiration basics Flashcards
Where does glycolysis take place
Cytoplasm
Where does the link reaction take place
Mitochondrial matrix
Where does the Krebs cycle take place
Mitochondrial matrix
Where does oxidative phosphorylation take place
Cristae of mitochondria
What happens during the phosphorylation stage of glycolysis
Glucose → 2 Triose phosphate
What happens during the oxidation stage of glycolysis
2 Triose phosphate → 2 pyruvate
Net gain during glycolysis (2)
2 ATP
2 NADH
What happens during the link reaction
Pyruvate → Acetate
Acetate + Coenzyme A → Acetyl coenzyme A
Net gain during the link reaction (2)
CO₂
NADH
What happens during the Krebs cycle (4)
Acetyl coenzyme A → Citrate
Citrate → 5C compound
5C compound → 4C compound
4C compound → Oxaloacetate
Net gain during the Krebs cycle
2 CO₂
3 NADH
1 ATP
1 FADH₂
What happens during oxidative phosphorylation (5)
- NADH + FADH → protons and electrons
- Electrons travel through ETC, losing energy
- This energy pumps H+ through the intermembrane space
- Via ATP synthase channels, producing ATP
- This ATP is used to create water from oxygen, protons and electrons
How many ATP molecules are synthesised for every NADH
3
How many ATP molecules are synthesised for every FADH
2
Net gain of ATP during glycolysis
8
