Not All Enzymes Have Substrate Specificity

question 129

Multiple Choice

Not all enzymes have substrate specificity. For example, pepsin can breakdown numerous types of proteins in the stomach. What concept best describes why the single enzyme pepsin can breakdown so many proteins?

• A) the law of mass action
• B) the induced -fit model
• C) complementary base pairing rule
• D) ligand -protein interactions
• E) the lock -and -key model

Describe the significance of resonance structures in understanding the stability of intermediates in electrophilic aromatic substitution reactions.

Explain the rate-determining step in electrophilic aromatic substitution reactions.

Demonstrate the ability to predict the reactivity of different aromatic compounds towards electrophilic substitution reactions.

Sketch mechanisms for electrophilic aromatic substitution reactions based on given reactants.

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