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(a)Explain the importance of enzymes in biological systems.

(b)What chemical transformations are catalyzed (i) by the enzyme catalase, (ii) by nitrogenase?

(c) Many enzymes follow this generic reaction mechanism, where E is enzyme, S is substrate, ES is the enzyme-substrate complex (where the substrate is bound to the enzyme's active site), and P is the product:

1. E + S ↔ ES

2. ES ↔ E + P

What assumptions are made in this model with regard to the rate of the bound substrate being chemically transformed into bound product in the active site?

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