MCQ on Mycobacterium spp (Medical Microbiology) - Tuberculosis, diagnosis and treatment of tuberculosis
Multiple Choice Question on Tuberculosis and Leprosy 1) Mycobacteria are acid-fast positive bacteria because they consist of : a) lipopolysaccharide in the bacterial cell wall b) mycolic acid in the bacterial cell wall c) lipids d) Both B and C options above 2) Which of the following first-line antibiotics are usually resistant to Mycobacterium tuberculosis ? a) Isoniazid and ciprofloxacin b) Isoniazid and Rifampin c) Rifampin and ciprofloxacin d) Rifampin and streptomycin 3) What is the mechanism responsible for antibiotic resistance seen in M. tuberculosis ? a) Mutations in DNA gyrase gene b) Alterations in beta-lactamase c) Mutations in the catalase-peroxidase gene d) Alterations in RNA polymerase 4) All of the following are examples of selective media / agar used for the culture of M. tuberculosis , Except ? a) Inspissated egg media b) Middlebrook 7H10 / 7H11 media with antibiotic...