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