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Assimilation

What fraction...

Question

What fraction of $C O_{2}$ exhaled by animals is generated by the reactions of citric acid cycle, if glucose is the sole source of energy?

2 / 6

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3 / 6

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1 / 6

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6 / 6

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Solution

The correct option is A $2 / 6$
The citric acid cycle also known as the TCA cycle or the Kreb cycle is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats ad proteins. If glucose is the sole source of energy then 2/6 carbon dioxide is exhaled by an animal.
So, option A is the correct option.

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Similar questions

Observe the reactions given below and choose the correct option.

Reaction 1: $C_{6} H_{12} O_{6} + 6 O_{2}$ $⟶$ $6 C O_{2} + 6 H_{2} O + E n e r g y$

Reaction 2: $6 C O_{2} + 6 H_{2} O$ $L i g h t - --- \to$ $C_{6} H_{12} O_{6} + 6 O_{2}$

C_{12} H_{22} O_{11} + H_{2} O H^{+} - - \to C_{6} H_{12} O_{6} + C_{6} H_{12} O_{6}

\to

1, 3

\to

1, 3

\to

1, 3,

\to

\to

1, 6

C_{6} H_{12} O_{6} (s) + 6 O_{2} (g) \to 6 C O_{2} (g) + 6 H_{2} O (l); Δ H = - 2900 k J

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