Midterm Practice Test

Midterm Practice Test There are 50 questions with some matching questions at the end. The questions should be relatively easy as well. Enjoy! 1. Which of the following is the smallest form of microorganism? a. b. c. d. Fungi Bacteria Virus Prion 2. What colour stain would gram negative bacteria produce? a. b. c. d. Purple Pink Red Blue 3. What part of the bacteria is specialized for movement? a. b. c. d. Pili Cytoplasm Capsule Flagellum 4. What is the normal PH range for human pathogens? a. b. c. d. 4-5 7-8 5-8 8+ 5. A certain type of organism grows best in 57*C temperatures. Which group would they be classified? a. b. c. d. e. Psychrophiles Psychrotrophs Mesophiles Thermophiles Hyperthermophiles 6. Where in the bacterial growth kinetics graph is the best time to use antibiotics? a. b. c. d. Lag phase Log phase Stationary phase death/decline phase 7. What is the best form of media to look at different degrees of hemolysis between different groups of bacteria? a. b. c. d. Complex media Blood agar MacConkey plate Selective media 8. What is the morphology of L. monocytogenes? a. b. c. d. Gram positive bacillus Gram negative cocci Gram negative streptococci Gram positive spiralis 9. Which part of the gram stain procedure is used as a counterstain? a. b. c. d. Crystal violet Safranin Iodine Methanol 10. What is the transmission of Neisseria meningitidis? a. b. c. d. Droplet Airborne Oral Vectors 11. What would you classify a diplobacilli? a. b. c. d. Prion Bacteria Virus Fungi 12. What is the transmission of Clostridium difficile? a. b. c. d. Fecal-oral Droplet Airborne Vectors 13. What's a major difference between endotoxin and exotoxin? a. b. c. d. Endotoxins contain lipid A in their cell wall Exotoxins are produced by the bacterial cell itself Endotoxins are fat molecules and exotoxins are proteins All of the above 14. Which form of antibiotics stops the replication (does not kill) bacteria? a. b. c. d. Bacteriostatic Bactericidal Amphotericin B Quinine 15. Which antibiotic used in animal feed has led to the production of VRE and VRSA? a. b. c. d. Avoparcin Vancomycin Penicillin Zidovudine 16. Which of the following would be an example of an acute/productive infection? a. b. c. d. Chicken pox AIDS/HIV A cold All of the above 17. Which groups of bacteria does Listeria monocytogenes fit into? a. Psychrophiles b. Psychrotrophs c. Mesophiles d. Thermophiles e. Hyperthermophiles 18. The formation of polysaccharides from simple sugars would be what kind of a reaction? a. b. c. d. Anabolic Catabolic Metabolic Terabolic 19. Michael wants to increase the speed of a reaction, but when he raises the temperature too high, the proteins denature. What should Michael do to the reaction to prevent this? (while also having the reaction move quickly) a. b. c. d. Lower the temperature Add enzymes Lower the concentration Decrease the PH 20. What organism has peptidoglycan in their cell wall? a. b. c. d. Bacteria Eukaryotes Prokaryotes Both a and c are correct 21. What is the morphological classification of Neisseria meningitidis? a. b. c. d. Gram positive cocci Gram negative diplococci Gram positive bacillus Gram negative bacillus 22. Which vaccine for Neisseria meningitidis is good for immunocompromised and children under 2 years? a. b. c. d. Polysaccharide Type B vaccine Conjugated Both a and c are correct 23. Which of the following are Metazoans (worms) a. b. c. d. Nematodes Cestodes Trematodes All of the above 24. A child is admitted to the hospital for a rash all over his body. He complains of itchiness, fever and vomiting. You notice that the vesicles are present at the same stage of formation. What infection does he have? a. b. c. d. Chicken pox Zoster Herpes simplex Smallpox 25. Penicillins are considered to be a beta-lactam. Which form of synthesis will penicillin disrupt? a. b. c. d. Nucleic acid synthesis Protein synthesis Cell membrane synthesis Cell wall synthesis 26. What is the function of lipid A? a. b. c. d. Part of cell membrane Functions as an endotoxin Functions as an exotoxin Stores fat in the cell 27. What is the morphology of Clostridium difficile? a. b. c. d. Gram positive diplococci Gram negative spirochaete Gram positive bacillus Gram negative coccus 28. Which part of the gram stain procedure is classified as the mordant? a. b. c. d. Crystal violet Safranin Iodine Methanol 29. Which of the following would bacteria be classified: a. b. c. d. Prokaryote Eukaryote Metazoa None of the above 30. What disease contains purpura (purple spots) as a symptom? a. b. c. d. Clostridium difficile Neisseria meningitidis Listeria monocytogenes Toxoplasma gondii 31. Which form or bacteria is a widely known food pathogen? a. b. c. d. Staphylococcus aureus Saccharomyces Pseudomonas aeruginosa Listeria monocytogenes 32. Which of the following is an RNA virus? a. b. c. d. Retroviridae (HIV) Adenoviridae Poxviridae (smallpox) Papillomaviridae (HPV) 33. Which of the following is true about viruses? a. b. c. d. Viruses are larger than bacteria Viruses contain DNA or RNA Viruses are free living Viruses can be treated with antibiotics 34. Which antimicrobial is known to cause complications with teeth and bone formation in children? a. b. c. d. Penicillin Fluoroquinolones Tetracyclines Aminoglycosides 35. If an organism were to have simple cell walls, and membrane enclosed organelles, what would it be classified as? a. b. c. d. Virus Fungi Bacteria Eukaryote 36. What temperature is protein denaturation most likely to occur? a. b. c. d. 50 degrees 35 degrees 67 degrees 47 degrees 37. What is the difference between an endospore in bacteria and an endospore in fungi? a. b. c. d. In bacteria endospores are for reproduction, in fungi endospores are for survival In bacteria endospores are for survival, in fungi endospores are for reproduction Both endospores help with reproduction and survival Endospores only help with survival 38. Finish this sentence: Anabolic reactions ______ energy, and catabolic reactions _______ energy. a. b. c. d. Produce; release Release; store Store; produce Store; release 39. Which cleaning term would be best used to kill and inactivate ALL bacteria on a surface or area? a. b. c. d. Viricide Sterilization Sanitization Disinfectant 40. At what temperature is a thermally dimorphic fungus a mould? a. b. c. d. 40 degrees 37 degrees 20 degrees 10 degrees 41. Which type of fungi is a primary pathogen? This is a bad question, ignore it a. b. c. d. Candida albicans Sporothrix Cryptococcus neoformans Moulds 42. What does it mean if an organism is an obligate aerobe? a. b. c. d. The organism cannot live in the presence of oxygen The organism can only live in the presence of oxygen The organism can do anaerobic respiration The organism can still grow without oxygen but it will be slower Matching/Fill in the blank: For questions 43-47 below, match which forms of bacteria grow in which tubes: microaerophile, facultative anaerobe, strict anaerobe, aerotolerant anaerobe, strict aerobe, and facultative anaerobe. 43. Tube 1: 44. Tube 2: 45: Tube 3: 46: Tube 4: 47: Tube 5: For questions 48-50 use the photo below to label the different phases of breakdown (hemolysis) in the agar plate: Alpha, Beta, Gamma 48. The breakdown in “A” is caused by: 49. The breakdown in “B” is cause by: 50: The breakdown in “C” is caused by: