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 / 30The Lancefield classification is used for: Streptococci Enterobacteriaceae Clostridia Staphylococci 2 / 30Bacterial capsules are primarily composed of: Lipids Proteins Polysaccharides Nucleic acids 3 / 30Which of the following bacteria produces diphtheria toxin? Listeria monocytogenes Clostridium difficile Corynebacterium diphtheriae Bordetella pertussis 4 / 30Which bacteria is known for causing tuberculosis? Mycobacterium tuberculosis Mycoplasma pneumoniae Streptococcus pneumoniae Bacillus subtilis 5 / 30Which bacteria show swarming motility on culture media? Salmonella typhi Pseudomonas aeruginosa Proteus mirabilis Vibrio cholerae 6 / 30Which of the following is a facultative anaerobe? Escherichia coli Mycobacterium tuberculosis Bacteroides fragilis Clostridium tetani 7 / 30Which of the following is an obligate intracellular bacterium? Staphylococcus aureus Escherichia coli Chlamydia trachomatis Mycobacterium leprae 8 / 30Which of the following bacteria is acid-fast? Klebsiella pneumoniae Proteus mirabilis Mycobacterium leprae Bacillus anthracis 9 / 30Which bacteria is shaped like a spiral? Bacillus Vibrio Spirochete Streptococcus 10 / 30Which of the following is a Gram-positive bacterium? Escherichia coli Salmonella typhi Pseudomonas aeruginosa Staphylococcus aureus 11 / 30Bacterial transformation involves: Cell lysis Viral DNA transfer Uptake of naked DNA Bacterial sex via pili 12 / 30Beta-hemolysis on blood agar is shown by: Streptococcus pyogenes Streptococcus pneumoniae Enterococcus faecalis Viridans streptococci 13 / 30Which bacterial enzyme helps in escaping neutrophil traps (NETs)? Catalase Beta-lactamase Coagulase DNase 14 / 30Which of the following is an indicator organism for water quality testing? Escherichia coli Salmonella typhi Shigella dysenteriae Vibrio cholerae 15 / 30The bacterial ribosome is of which type? 50S 60S 70S 80S 16 / 30Which method is used to detect bacterial endotoxin contamination in pharmaceuticals? ELISA Western blot Limulus Amebocyte Lysate (LAL) test PCR 17 / 30Which bacterial genus lacks a cell wall? Corynebacterium Mycoplasma Bacillus Mycobacterium 18 / 30Toxins that stimulate massive cytokine release are known as: Neurotoxins Superantigens Enterotoxins Endotoxins 19 / 30Which structure is responsible for bacterial motility? Capsule Flagella Ribosome Pili 20 / 30The main target of aminoglycosides in bacteria is: Cell wall 30S ribosomal subunit DNA gyrase 50S ribosomal subunit 21 / 30Which of the following is a key virulence factor of Neisseria meningitidis? M protein Capsule Exotoxin A Endotoxin 22 / 30Which type of bacterial plasmid can confer antibiotic resistance? F plasmid R plasmid Col plasmid Cryptic plasmid 23 / 30The Quellung reaction is used to detect: Flagella Endospores Capsules Pili 24 / 30The cell wall of Gram-positive bacteria is rich in: Mycolic acid Lipopolysaccharide Phospholipids Peptidoglycan 25 / 30Bacteria reproduce by which method? Mitosis Budding Conjugation Binary fission 26 / 30Which bacteria can form spores? Staphylococcus epidermidis Neisseria gonorrhoeae Clostridium botulinum Escherichia coli 27 / 30The term “normal flora” refers to: Microbes that normally reside in the body without causing disease Antibiotic-resistant bacteria All microbes Harmful microbes 28 / 30Which staining technique is used to classify bacteria as Gram-positive or Gram-negative? Acid-fast stain Ziehl-Neelsen stain Gram stain India ink stain 29 / 30Gram-negative bacteria have: No cell wall Thick peptidoglycan layer Teichoic acids Outer membrane with lipopolysaccharides 30 / 30Which antibiotic inhibits bacterial cell wall synthesis? Ciprofloxacin Erythromycin Penicillin Tetracycline Your score isThe average score is 57% 0% Restart quiz
