Which of the following loop diuretic drugs is a derivative of anthranilic acid?

Which statement best describes the common chemical structure of aminoglycoside antibiotics?

In a bacterial infection producing aminoglycoside acetyltransferase enzymes, which aminoglycoside typically retains efficacy and why?

Activated proton pump inhibitors covalent bond to exposed amino acid residues of H+/K+-ATPase. Which amino acid residue is involved in this covalent binding?