11. Which of the following represents a noncovalent interaction? (A) Disulfide bond (B) Peptide bond (C) Ionic interaction (D) Amide bond (E) Phosphodiester bond

2. Regarding Michaelis-Menten kinetics, which statement is correct? (A) Km equals substrate concentration at Vmax (B) Km is independent of enzyme concentration (C) Vmax increases linearly with substrate (D) Km applies only to allosteric enzymes (E) Vmax is determined solely by Km