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Respiration Flashcards

(12 cards)

1
Q

what are the stages of aerobic respiration

A
  • glycolysis
  • link reaction
  • krebs cycle
  • oxidative phosphorylation
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2
Q

outline glycolysis

A
  • glucose is phosphorylated by adding 2 phosphates, making glucose more reactive
  • 1-6 glucose biphosphate is formed and is then hydrolysed into 2 molecules of TP
  • each molecule of TP is oxidised to pyruvate loosing its phosphates, which are used to form ATP, and reduces NAD to NADH
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3
Q

whats the products of glycolysis

A

2 pyruvates, 2 NADH and a net gain of 2 ATP

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4
Q

where does glycolysis happen

A

cytoplasm

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5
Q

where does the link reaction happen

A

mitochondrial matrix

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6
Q

outline the link reaction

A
  • pyruvate us dehydrogenated and decarboxylated to from acetate
  • NAD is reduced to NADH and Co2 is released
  • acetate combines with coenzyme A to from AcetylCoA
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7
Q

what is the product of the link reaction

A

1 AcetylCoA, 1 NADH and 1 Co2

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8
Q

where does the krebs cycle take place

A

mitochondrial matrix

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9
Q

outline the krebs cycle

A
  • a 4C compound, oxaloacetate, combines with acetylcoa to from nitrate
  • citrate is decarboxylated and dehydrogenated into a 5C compound. In doing so, NAD is reduced to NADH.
  • the 5C compound is again dehydrogenated and decarboxylated into a 4C compound. In doing so, NAD is reduced to NADH.
  • the 4C compund is dehydrogenated a further 2 two times to produced FADH2 and NADH .
  • ATP is produced from ADP and Pi
  • oxaloacetate is regenerated
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10
Q

whats the product of the krebs cycle

A

3 NADH, 1 FADH2, 1 ATP and 1 co2

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11
Q

where does oxidative phosphorylation happen

A

mitochondria cristae

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12
Q
A
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