anaerobic respiration Flashcards

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1
Q

what is the starting molecule for anaerobic respiration

A

pyruvate from glycolysis

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2
Q

what is the first stage of anaerobic respiration from pyruvate

A

reduced NAD is oxidised to NAD so glycolysis continues

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3
Q

what is the second stage of anaerobic respiration from reduced NAD?

A
  • H from reduced NAD reduces pyruvate to lactate
  • catalysed by lactate hydrogenase
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4
Q

what are the products of anaerobic respiration?

A

2 molecules of lactate

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5
Q

what is the sequence of events for anaerobic respiration in ethanol fermentation?

A

pyruvate
ethanal
ethanol

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6
Q

what is ethanol fermentation used by?

A
  • fungi (eg. yeast)
  • plants
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7
Q

what is the first stage of anaerobic respiration in ethanol fermentation

A
  • decarboxylation of pyruvate to ethanal
  • using pyruvate decarboxylase
  • produces Co2
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8
Q

what is the second stage of anaerobic respiration in ethanol fermentation?

A
  • ethanol accepts H atoms from reduced NAD
  • becomes reduced to ethanol using dehydrogenase
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9
Q

what is the third stage of anaerobic respiration in ethanol fermentation?

A
  • reduced NAD is reoxidised
  • made available to accept more H atoms during oxidation of triose phosphate so glycolysis can continue
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