BIOLOGY
PROTEINS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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stressing the bonds in the substrate molecule.
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increasing the net energy output of the reaction.
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reacting with the allosteric site of the substrate.
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None of the above
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Detailed explanation-1: -Enzymes perform the critical task of lowering a reaction’s activation energy-that is, the amount of energy that must be put in for the reaction to begin. Enzymes work by binding to reactant molecules and holding them in such a way that the chemical bond-breaking and bond-forming processes take place more readily.
Detailed explanation-2: -Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind. This is termed “induced fit", meaning that the precise orientation of the enzyme required for catalytic activity can be induced by the binding of the substrate. Enzymes have active sites.
Detailed explanation-3: -By manipulating the substrates of the reaction, the enzyme can lower the necessary energy needed to make the reaction occur.
Detailed explanation-4: -Enzymes also promote chemical reactions by bringing substrates together in an optimal orientation, lining up the atoms and bonds of one molecule with the atoms and bonds of the other molecule. This can contort the substrate molecules and facilitate bond-breaking.