BIOLOGY
ENZYMES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Any molecule with the shape of the substrate can bind to the enzyme’s active site
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Any molecule with a different shape from the substrate cannot bind to the enzyme
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Any molecule is able to bond to the enzyme as long as it has the same functional group and properties
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None of the above
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Detailed explanation-1: -The allosteric inhibitor binds to an enzyme at a site other than the active site. The shape of the active site is altered so that the enzyme can no longer bind to its substrate.
Detailed explanation-2: -The specificity of an enzyme depends on its three-dimensional structure which is critical for its normal functioning. According to the lock-and-key hypothesis of enzyme action, the three-dimensional structure of the active site of an enzyme allows the enzyme to bind easily to specific substrates only.
Detailed explanation-3: -Induced fit indicates a continuous change in the conformation and shape of an enzyme in response to substrate binding. This makes the enzyme catalytic which results in the lowering of the activation energy barrier causing an increase in the overall rate of the reaction.
Detailed explanation-4: -The active site is the part of the enzyme that binds the substrate and carries out the reaction. Enzyme specificity means that the enzyme only binds certain molecules that have the right shape. It will leave other molecules alone.