Anearobic respiration and respiratory substrates
- Created by: vezting
- Created on: 26-04-16 16:54
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- anaerobic respiration and respiratory substrates
- lactate fermentation
- 1: reduced NADH from glycolysis transfers H to pyruvate
- 3: this forms lactate and NAD. NAD can be re-used in glycolysis
- 2: lactate dehydrogenase oxidises NADH
- alcoholic fermentation
- 1: CO2 is removed from pyruvate to from ethanal by decarboxylase enzyme
- 2: NADH from glycolysis transfers hydrogen to ethanal to form ethanol and NAD by ehtanol dehydrogenase
- 3: NAD can be re-used in glycolysis
- respiratory substances
- a respiratory substrate is any biological molecule that can be broken down in respiration to relase energy
- cells respire glucose, but they also respire carbohydrates, lipids and proteins
- different respiratory substrates enter respiration at different points
- Glucose enters respiration at glycolysis
- proteins and lipids enter respiration at the krebs cycle
- respiratory quotients
- it is useful because you can work out what molecule they are respiring and what type of respiration it is
- it is the volume of CO2 produced when that substrate is respired, divided by volume of oxygen consumed
- it has to be done in a set period of time
- it can be measure in voilume or molecules
- lactate fermentation
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