• Strukturformler af pyruvat, acetyl-CoA, alfa-ketoglutarat og oxaloacetat

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Last updated 9:20 PM on 3/13/26
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22 Terms

1
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Hvor mange carbonatomer indeholder pyruvat?

3 carbonatomer.

2
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Hvad er den kemiske strukturformel for pyruvat?

CH₃–CO–COO⁻

3
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Hvilken funktionel gruppe karakteriserer pyruvat?

En ketogruppe og en carboxylatgruppe.

4
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Hvilket enzym omdanner pyruvat til acetyl-CoA?

Pyruvatdehydrogenase-komplekset.

5
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Hvor mange carbonatomer indeholder acetylgruppen i acetyl-CoA?

2 carbonatomer.

6
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Hvad er den centrale struktur i acetyl-CoA?

CH₃–CO–S–CoA

7
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Hvilken type binding findes mellem acetylgruppen og CoA?

En højenergisk thioesterbinding.

8
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Hvad er funktionen af acetyl-CoA i citratcyklussen?

Donerer en 2-carbon acetylgruppe til oxaloacetat.

9
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Hvor mange carbonatomer indeholder oxaloacetat?

4 carbonatomer.

10
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Hvad er strukturformlen for oxaloacetat?

⁻OOC–CO–CH₂–COO⁻

11
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Hvilken funktionel gruppe gør oxaloacetat til en ketosyre?

En ketogruppe ved carbon 2.

12
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Hvilket enzym katalyserer kondensation mellem acetyl-CoA og oxaloacetat?

Citratsyntase.

13
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Hvad er produktet af denne reaktion?

Citrat (6 carbonatomer).

14
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Hvor mange carbonatomer indeholder α-ketoglutarat?

5 carbonatomer.

15
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Hvad er strukturformlen for α-ketoglutarat?

⁻OOC–CO–CH₂–CH₂–COO⁻

16
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Hvilken type metabolisk intermediær er α-ketoglutarat?

En α-ketosyre i citratcyklussen.

17
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Hvilket enzym omdanner isocitrat til α-ketoglutarat?

Isocitratdehydrogenase.

18
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Hvilket molekyle produceres samtidig i denne reaktion( isocitrat til α-ketoglutarat)?

NADH og CO₂.

19
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Hvilket enzym omdanner α-ketoglutarat videre i cyklussen?

α-ketoglutaratdehydrogenase-komplekset.

20
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Hvad dannes i denne reaktion?

Succinyl-CoA, NADH og CO₂.

21
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Hvilket intermediær regenereres i slutningen af citratcyklussen?

Oxaloacetat.

22
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Hvorfor er oxaloacetat vigtigt for cyklussens funktion?

Det fungerer som acceptor for acetyl-CoA og starter en ny cyklus.

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