Which step causes activation of catalytic site of an enzyme__________________?
Correct answer: B. Formation of Enzyme Susstrate complex.
- A. Change in pH of the surroundings.
- B. Formation of Enzyme Susstrate complex.
- C. Change in the charge of the active site.
- D. Change in temperature
Explanation
When an enzyme-substrate complex forms, interactions between the substrate and active site can produce induced fit, positioning catalytic groups correctly and activating the catalytic site. A student may choose a change in pH because pH alters enzyme charge, but pH change is an external factor and is not the normal activation step itself.
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