Bacteriology Quiz: Test Your Knowledge Bacteriology QuizWelcome to the Bacteriology Quiz on Learn Microbiology. This quiz is designed to help you assess your understanding of bacterial structure, classification, physiology, pathogenesis, and lab diagnosis. Whether you're a beginner or an advanced learner, challenge yourself with questions covering Gram staining, antibiotic resistance, bacterial diseases, and more. Select the correct answer and track your score to boost your microbiology knowledge. NameEmail 1 / 30Which bacterial enzyme helps in escaping neutrophil traps (NETs)? DNase Coagulase Beta-lactamase Catalase 2 / 30Which of the following is a key virulence factor of Neisseria meningitidis? Capsule M protein Endotoxin Exotoxin A 3 / 30The Lancefield classification is used for: Staphylococci Enterobacteriaceae Clostridia Streptococci 4 / 30Which bacteria is known for causing tuberculosis? Streptococcus pneumoniae Mycoplasma pneumoniae Bacillus subtilis Mycobacterium tuberculosis 5 / 30Which of the following is an indicator organism for water quality testing? Salmonella typhi Shigella dysenteriae Escherichia coli Vibrio cholerae 6 / 30Which of the following bacteria produces diphtheria toxin? Corynebacterium diphtheriae Listeria monocytogenes Bordetella pertussis Clostridium difficile 7 / 30Which of the following is an obligate intracellular bacterium? Chlamydia trachomatis Escherichia coli Mycobacterium leprae Staphylococcus aureus 8 / 30Bacteria reproduce by which method? Budding Mitosis Binary fission Conjugation 9 / 30Toxins that stimulate massive cytokine release are known as: Enterotoxins Endotoxins Neurotoxins Superantigens 10 / 30Which bacteria is shaped like a spiral? Vibrio Bacillus Spirochete Streptococcus 11 / 30Which bacteria show swarming motility on culture media? Vibrio cholerae Salmonella typhi Proteus mirabilis Pseudomonas aeruginosa 12 / 30The term “normal flora” refers to: Harmful microbes Antibiotic-resistant bacteria Microbes that normally reside in the body without causing disease All microbes 13 / 30Which bacteria can form spores? Escherichia coli Staphylococcus epidermidis Clostridium botulinum Neisseria gonorrhoeae 14 / 30Which antibiotic inhibits bacterial cell wall synthesis? Ciprofloxacin Tetracycline Penicillin Erythromycin 15 / 30Bacterial capsules are primarily composed of: Nucleic acids Polysaccharides Lipids Proteins 16 / 30Which bacterial genus lacks a cell wall? Mycobacterium Corynebacterium Bacillus Mycoplasma 17 / 30Which structure is responsible for bacterial motility? Capsule Pili Ribosome Flagella 18 / 30Which of the following is a facultative anaerobe? Clostridium tetani Mycobacterium tuberculosis Bacteroides fragilis Escherichia coli 19 / 30Which of the following bacteria is acid-fast? Bacillus anthracis Klebsiella pneumoniae Mycobacterium leprae Proteus mirabilis 20 / 30Gram-negative bacteria have: Teichoic acids Outer membrane with lipopolysaccharides No cell wall Thick peptidoglycan layer 21 / 30The cell wall of Gram-positive bacteria is rich in: Lipopolysaccharide Phospholipids Peptidoglycan Mycolic acid 22 / 30Which of the following is a Gram-positive bacterium? Staphylococcus aureus Escherichia coli Salmonella typhi Pseudomonas aeruginosa 23 / 30Bacterial transformation involves: Cell lysis Bacterial sex via pili Viral DNA transfer Uptake of naked DNA 24 / 30The main target of aminoglycosides in bacteria is: 30S ribosomal subunit DNA gyrase Cell wall 50S ribosomal subunit 25 / 30Beta-hemolysis on blood agar is shown by: Viridans streptococci Streptococcus pyogenes Streptococcus pneumoniae Enterococcus faecalis 26 / 30The bacterial ribosome is of which type? 60S 70S 50S 80S 27 / 30Which staining technique is used to classify bacteria as Gram-positive or Gram-negative? Acid-fast stain Ziehl-Neelsen stain India ink stain Gram stain 28 / 30Which method is used to detect bacterial endotoxin contamination in pharmaceuticals? Western blot ELISA Limulus Amebocyte Lysate (LAL) test PCR 29 / 30The Quellung reaction is used to detect: Flagella Capsules Pili Endospores 30 / 30Which type of bacterial plasmid can confer antibiotic resistance? Col plasmid F plasmid Cryptic plasmid R plasmid Your score isThe average score is 58% 0% Restart quiz
