BIOMOLECULES AND ENZYMES

BIOLOGY

MECHANISM OF ENZYME ACTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which explains how enzymes can be recycled?
A
Enzymes are not used up in a chemical reaction.
B
Enzymes increases during a chemical reaction.
C
Enzymes change to a different type after a chemical reaction.
D
Enzymes reuse substrates in a chemical reaction.
Explanation: 

Detailed explanation-1: -Enzymes can be thought of as metabolic reaction catalysts. And, we know very well that catalysts are not used up in reactions. This is because they do not participate in the process itself, but what they do is rather give a lower-activation-energy alternative reaction pathway. The same goes for enzymes.

Detailed explanation-2: -Enzymes serve as catalysts to many biological processes, and so they are not used up in reactions and they may be recovered and reused. However, in a laboratory setting, reactions involving enzymes can leave the enzyme unrecoverable.

Detailed explanation-3: -Enzymes speed the reaction, or allow it to occur at lower energy levels and, once the reaction is complete, they are again available. In other words, they are not used up by the reaction and can be re-used. Enzymes are designed to work most effectively at a specific temperature and pH.

Detailed explanation-4: -recycled and can be used again and again. Enzymes are biological catalysts. This means they have two fundamental properties: (1) they speed up the rate of the chemical reaction and (2) they are not altered or consumed during catalysis, meaning they may be used again and again.

Detailed explanation-5: -One enzyme can be used for many different types of chemical reactions. Enzymes are highly specific for the substrate. So they cannot be used for different types of reactions. As lock and key model assumes that a high degree of similarity between the shape of substrate and the geometry of the binding site of the enzyme.

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