36. The scientist who first discovered the substance penicillin was
A. Joseph Lister
B. Alexander Fleming
C. Paul Ehrlich
D. none of these
37. The larger the __________ , the better the chemotherapeutic agent.
A. therapeutic index
B. therapeutic dose
C. selective toxicity
D. spectrum
38. Chelate forming peptide antibiotic are/is
A. bleomycins
B. sideromycins
C. both (a) and (b)
D. vancomycin
39. With which of the following aminoglycosides interfere?
A. Protein synthesis
B. DNA function
C. Cell wall synthesis
D. Cell membrane function
40. Which of the following protein synthesis mechanisms may be affected by particular drugs?
A. Peptide bond formation
B. mRNA translocation
C. Aminoacyl-tRNA binding
D. All of these