Answer: Bind to the active site and compete with substrate.
- A Bind to the active site and compete with substrate
- B Bind irreversibly and permanently inactivate the enzyme
- C Unfold the enzyme's tertiary structure, destroying activity
- D Raise the maximum velocity Vmax while leaving Km unchanged
Correct answer: A. Bind to the active site and compete with substrate
Explanation: Competitive inhibitors resemble the substrate and compete for the active site; they increase apparent Km but not Vmax.
Two amino acids join via a condensation reaction: the carboxyl -OH of one and an amine -H of the other are eliminated as water, leaving a peptide bond (-CO-NH-) linking them into a dipeptide; repeating this builds a full protein chain.
Concept context
The chemistry of life: carbohydrates, proteins, lipids, nucleic acids, enzymes, and vitamins. Understand their structures, classification, and biological functions. Highly relevant for NEET and Class 12 board exams.