The active site of an enzyme______________?
Correct answer: C. Determined by structure and the specificity of the enzyme
- A. Never changes
- B. Forms no chemical bond with substrate
- C. Determined by structure and the specificity of the enzyme
- D. They are non specific in their action
Explanation
The active site's shape and chemical groups arise from the enzyme's three-dimensional structure, giving the enzyme specificity for particular substrates. A common mistake is choosing a because the active site may adjust slightly during induced fit, but it is not completely unchanging in every enzyme.
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About Mode of Enzyme Action
Enzyme action depends on the active site forming a temporary enzyme substrate complex, then converting substrate into products with lower activation energy. The lock and key and induced fit models explain specificity and binding, while cofactors and changes in enzyme shape can affect catalysis.
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More Mode of Enzyme Action questions
Which one of the following remove nucleotides from the ends of DNA or RNA?
According to Lock and Key model, the active site is regarded as:
According to the induced fit model
Which statement is incorrect about Lock and Key Model________________?
A three dimensional dcavity bearing a specific charge by which the enzyme reacts with its substrate is called_________________?
Which step causes activation of catalytic site of an enzyme__________________?