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biology yr 13 > krebs cycle > Flashcards

krebs cycle Flashcards

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1
Q

what feeds into the krebs cycle from the link reaction

A

acetly COA

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2
Q

what then happens to acetly

A

coa is released

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3
Q

how is COA released

A

bond broken between acetyl COA and then recyceled back into the link reaction

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4
Q

what is formed after acetly

A

citrate

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5
Q

how is citrate formed

A

from acetly joining oxaloacetate compound

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6
Q

how many carbons are at acetyl

A

2

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7
Q

ow many carbons are at oxaloacetate

A

4

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8
Q

how many carbons are at citrate

A

6

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9
Q

why are there 6 carbons at citrate

A

becuase the 4 carbon compound of oxaloacetate and the 2 carbon compound of acetyl join to form 6 carbon compound citrate

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10
Q

what is added to citrate

A

nad

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11
Q

what does the addition of nad to citrate do

A

oxidasing citrate by nad uses dehydroganase so citrate is dehydrogenated to form a 5 carbon compound

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12
Q

what else happens to citrate

A

decarboxylated by decarboxylase - remove co2

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13
Q

what forms after citrate

A

5 carbon compound

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14
Q

what forms after the 5 carbon compound

A

4 carbon compound

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15
Q

what happens to 5 carbon compound

A

decarboxylated and dehydrogenated

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16
Q

what is added to 4 carbon compound

A

adp +pi

17
Q

what happens to the adp

A

is phosphoralated to form atp

18
Q

what happens to 4c

A

phophorilation of adp+pi to form atp

19
Q

what else happens to 4 c compound

A

h+FAD is added and a pair of hydrogen atoms are removed and accepted by coenzyme FAD becoing reduced to FADH

20
Q

what does the fad become

A

FADH

21
Q

what happens to the fad added

A

it is reduced

22
Q

when is FAD added

A

after the addition of adp on the 4 carbon compound

23
Q

after fad is reduced what does this form

A

the same 4 carbon compound

24
Q

what happens to this second 4 carbon compound

A

further dehydrogenated

25
Q

what is added to the second 4 carbon compound

A

h+nad

26
Q

what happens to the nad

A

gets reduced to nadh

27
Q

what happens aafter dehydrogenation

A

regenerates oxalocetate and the cycle starts again

28
Q

how is oxaloacetate produced form 4 carbon compound

A

4 carbon compound is dehydrogenated

biology yr 13 (42 decks)

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