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Krebs' cycle starts with the formation o...

Krebs' cycle starts with the formation of a six carbon compound by reaction between

A

fumaric acid and pyruvic acid

B

OAA and acetyl CoA

C

malic acid and acetyl CoA

D

succinic acid and pyruvic acid.

Text Solution

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The correct Answer is:
B
Acetyl CoA (2-carbon compound) combines with oxaloacetate (4-carbon compound) in the presence of condering ezyme citrate synthase to form a tricarboxylic 6-carbon compound called citric acid. It is the first product of Krebs' cycle. CoA is liberated
`"Acetyl CoA + Oxaloacetic acid +" H_(2) overset("Citrate synthase")(rarr) "Citrate + CoA"`
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NCERT FINGERTIPS-RESPIRATION IN PLANTS-Respiration In Plants
  1. Which step is called gateway step/link reaction in aerobic respiration...

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  2. Alternate name of Krebs' cycle is

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  3. Krebs' cycle starts with the formation of a six carbon compound by rea...

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  4. In krebs' cycle OA A accepts acteyl CoA to form

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  5. Which of the following is a 4-carbon compound?

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  6. Identify X,Y and Z in the given diagram representing steps of citric a...

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  7. Consider the first reaction of TCA cycle. Acetyl CoA + OA A +H(2)O o...

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  8. Identify enzyme A in the given reaction of Krebs' cycle underset((4C...

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  9. Krebs' cycle is also called metabolic sink as it is a common pathway f...

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  10. The intermediate product between alpha-ketoglutaric acid and succinic ...

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  11. Select the correct sequence of formation of given intermediates of Kre...

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  12. Substrate level phosphorylation occurs during which step of Krebs' cyc...

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  13. The first 5C dicarboxylic acid in Krebs' cycle whic is used in nitroge...

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  14. Which of the following steps is associated with ATP formation (substra...

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  15. FAD participates in Krebs' cycle as electron acceptor during conversio...

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  16. Select the correct statement.

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  17. All enzymes of TCA cycle are located in the mitochondrial matrix excep...

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  18. Categorise the given equations under respective phases and select the ...

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  19. Which of the following steps of respiration is amphibolic ?

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  20. When two molecules of acetyl CoA enter the TCA cycle, net gain at the ...

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