Which enzyme is required for the following conversion?
Pyruvic acid + $CoA + NAD^+ \longrightarrow$ Acetyl $CoA + CO_2 + NADH + H^+$

  • A
    Pyruvate dehydrogenase
  • B
    Phosphoglucomutase
  • C
    Pyruvate oxidase
  • D
    Pyruvate carboxylase

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Identify the step in the tricarboxylic acid cycle,which does not involve oxidation of the substrate.

In one turn of the citric acid cycle,how many substrate-level phosphorylation reactions occur?

In Krebs cycle,$FAD$ participates as an electron acceptor during the conversion of......

Match the enzyme involved in the Krebs cycle given in column-$I$ with the reactions they catalyse given in column-$II$. Choose the correct option.
Column $I$Column $II$
$i.$ Isocitrate dehydrogenase$a.$ Citrate $\rightarrow$ Cis-aconitate
$ii.$ Fumarase$b.$ Succinate $\rightarrow$ Fumarate
$iii.$ Aconitase$c.$ Fumarate $\rightarrow$ Malate
$iv.$ Succinate dehydrogenase$d.$ Isocitrate $\rightarrow$ Oxalosuccinic acid

When $1$ molecule of pyruvate is completely oxidized,how many moles of carbon dioxide are produced?

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