krebs cycle Flashcards

1
Q

what are the two reduced co enzymes used in krebs cycle

A

NAD and FAD.

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2
Q

where does it take place

A

Mitochondrial matrix.

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3
Q

what are the products of the krebs cycle

A

6 reduced NADP
2 reduced FAD
2 ATP
4 CO2

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4
Q

what molecule is passed from the link reaction to the krebs cycle

A

2 Acetyl CoA (co-enzyme A) enters the krebs cycle from the link reaction.

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5
Q

what carbon compound is used to make acetyle coa to citrate

A

axaloacetate (4c) accepts acetyl (2c) from CoA, to create citrate (6c)

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6
Q

After Citrate (6C) is produced what is the next step.

A

citrate is dehydrogenated and decarboxylated to produce a five carbon. and produce products such as 2 Reduced NADH and 2 carbon dioxide

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7
Q

what does dehydrogenated mean

A

the removal of a hydrogen atoms from a substrate molecule

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8
Q

what does decarboxylation mean

A

removal of a carboxyl group from a substrate molecule

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9
Q

what is substrate level phosphorylation

A

the production of ATP from ADP and Pi

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10
Q

In the Krebs cycle, when does substrate level phosphorylation take place

A

When the first 4 carbon compound is created

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11
Q

what is the next step after the 5 carbon compound is produced

A

the 5 carbon compound is dehydrogenated and decarboxylated producing 2 carbon dioxide and 2 nadp. and producing a 4 carbon compound

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12
Q

what is the products of substrate level phosphorylation

A

2 atp

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13
Q

after substrate phosphorylation summarise the ending of the krebs cycle

A

another 4cc dehydrogenated producing 2 FAD

another 4cc is dehydrogenated to regenerate a molecule of a oxaloacetate again.

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14
Q

how is the krebs cycle aerobic, when no oxygen is directly used

A

because the krebs cycle wont take place if there is no oxygen present

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