Anaerobic respiration
- Created by: Steff06
- Created on: 03-03-16 18:22
View mindmap
- Anaerobic respiration
- If OXYGEN is ABSENT, the Electron Transport Chain cannot function and so the Link Reaction and Krebs Cycle also stop.
- GLYCOLYSIS is now the only source of ATP. Reduced NAD has to be REOXIDISED so glycolysis can continue.
- FUNGI e.g. YEAST can reoxidise NAD through ethanol/ ALCOHOLIC FERMENTATION.
- ETHANAL is the hydrogen acceptor.
- CO2 and ATP are produced. Reduced NAD is reoxidised.
- The end products are ETHANOL and CO2.
- The enzymes involved are PYRUVATE DECARBOXYLASE and ETHANOL DEHYDROGENASE.
- PYRUVATE --> ETHANAL --> ETHANOL
- Animals reoxidise NAD by LACTATE FERMENTATION
- Occurs in MAMMALS during EXERCISE.
- Reduced NAD must be REOXIDISED to NAD. PYRUVATE is the hydrogen acceptor.
- ATP and reoxidised NAD are produced. CO2 is NOT produced.
- Final product produced is LACTATE. Enzyme involved is LACTATE DEHYDROGENASE.
- PYRUVATE --> LACTATE
- Lack of oxygen causes build up of LACTIC ACID. Causes muscle FATIGUE. Produces small amounts of ATP. Lactic acid is broken down in LIVER and MUSCLE cells.
Comments
No comments have yet been made