Microbiology 50 Mcqs With Answers

Microbiology - 50 MCQs with Answers1. The father of microbiology is:A. Louis PasteurB. Robert KochC. Antonie van LeeuwenhoekD. Joseph ListerAnswer: C. Antonie van Leeuwenhoek2. The technique used to sterilize culture media using steam under pressure is:A. FiltrationB. PasteurizationC. AutoclavingD. Dry heat sterilizationAnswer: C. Autoclaving3. The gram staining technique differentiates bacteria based on:A. Cell sizeB. Cell wall compositionC. Shape of the bacteriaD. Capsule presenceAnswer: B. Cell wall composition4. Gram-positive bacteria stain:A. Pink/redB. Blue/blackC. Purple/blueD. GreenAnswer: C. Purple/blue5. Which structure helps bacteria in motility?A. PiliB. CapsuleC. FlagellaD. RibosomesAnswer: C. Flagella6. Which bacterial structure is responsible for adherence to surfaces?A. CapsuleB. Pili (Fimbriae)C. FlagellaD. SporesAnswer: B. Pili (Fimbriae)7. The spore-forming bacteria include:A. Escherichia coliB. Bacillus and Clostridium speciesC. StaphylococcusD. StreptococcusAnswer: B. Bacillus and Clostridium species8. The organism responsible for tuberculosis is:A. Mycobacterium lepraeB. Mycobacterium tuberculosisC. Clostridium tetaniD. Bacillus anthracisAnswer: B. Mycobacterium tuberculosis9. Which staining method is used to detect Mycobacterium tuberculosis?A. Gram stainB. Acid-fast stain (Ziehl-Neelsen stain)C. Capsule stainD. Spore stainAnswer: B. Acid-fast stain (Ziehl-Neelsen stain)10. The vector of malaria is:A. Tsetse flyB. Anopheles mosquitoC. SandflyD. HouseflyAnswer: B. Anopheles mosquito11. The organism causing syphilis is:A. Neisseria gonorrhoeaeB. T reponema pallidumC. Chlamydia trachomatisD. Haemophilus ducreyiAnswer: B. T reponema pallidum12. Which virus causes AIDS?A. HBVB.