anaerobic respiration Flashcards
what is the starting molecule for anaerobic respiration
pyruvate from glycolysis
what is the first stage of anaerobic respiration from pyruvate
reduced NAD is oxidised to NAD so glycolysis continues
what is the second stage of anaerobic respiration from reduced NAD?
- H from reduced NAD reduces pyruvate to lactate
- catalysed by lactate hydrogenase
what are the products of anaerobic respiration?
2 molecules of lactate
what is the sequence of events for anaerobic respiration in ethanol fermentation?
pyruvate
ethanal
ethanol
what is ethanol fermentation used by?
- fungi (eg. yeast)
- plants
what is the first stage of anaerobic respiration in ethanol fermentation
- decarboxylation of pyruvate to ethanal
- using pyruvate decarboxylase
- produces Co2
what is the second stage of anaerobic respiration in ethanol fermentation?
- ethanol accepts H atoms from reduced NAD
- becomes reduced to ethanol using dehydrogenase
what is the third stage of anaerobic respiration in ethanol fermentation?
- reduced NAD is reoxidised
- made available to accept more H atoms during oxidation of triose phosphate so glycolysis can continue