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Question

Choose the correct statement with respect to metabolic pathways.

A
They are not isolated reactions
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B
They could be linear
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C
They could be cyclic
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D
All of these
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Solution

The correct option is D All of these
Metabolism is the sum total of all the chemical reactions that occur inside our body. It can be classified into anabolism and catabolism. Anabolic pathways are biosynthetic pathways or building up pathways which are endothermic i.e they consume energy. Catabolic pathways are breakdown or degradation pathways which are exothermic i.e they release energy. Catabolic reactions release energy that are used in anabolic reactions. Anabolic reactions store energy that is released from a catabolic reaction. Metabolic pathways are linked to other reactions and are not isolated. Metabolic reactions can follow a linear (eg:- glycolysis) pathway or cyclic (Krebs’ cycle) pathway.

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