TOTW#11 - Microbiology Attempt 20 challenging trivia questions on Microbiology Start QuizPage 1 of 23 Which one of the following individuals developed the first vaccine, and against which disease was it developed? Paul Ehrlich; Tuberculosis Louis Pasteur; Measles Edward Jenner; Smallpox Robert Koch; Anthrax Page 2 of 23 Select the false statement regarding prokaryotes and eukaryotes: Fungi are eukaryotic Prokaryotes reproduce by binary fission Eukaryotes have a well defined nucleus with a nuclear membrane In prokaryotes, respiration takes place in the mitochondria Page 3 of 23 Which of the following organisms is not capsulated? Neisseria gonorrhea Yersinia pestis Bacillus anthracis Cryptococcus neoformans Page 4 of 23 A 5 year old girl presented to the clinic with fever, sore throat, a maculopapular rash that began on the neck spreading to her trunk, and a bright red tongue with papillary hyperplasia. Which best describes the causative organism? Gram-positive, catalase-positive cocci Gram-positive, catalase-negative cocci Gram positive, spore-forming rods Gram-negative, anaerobic bacilli Page 5 of 23 Select the false statement regarding Bacillus anthracis: Produces heat resistant endospores Inhalation anthrax (Wool sorter’s disease) is the most severe form with 95% mortality No vaccine currently exists Skin lesions in cutaneous anthrax are painless Page 6 of 23 Which of the following is an antifungal medication commonly used to treat Candida albicans infections? Penicillin Ciprofloxacin Fluconazole Metronidazole Page 7 of 23 Which virus is responsible for causing infectious mononucleosis? Human herpesvirus 6 (HHV-6) Cytomegalovirus (CMV) Varicella-zoster virus (VZV) Epstein-Barr virus (EBV) Page 8 of 23 Which of the following is a protozoan parasite transmitted by the bite of the tsetse fly and causes African sleeping sickness? Plasmodium falciparum Trypanosoma cruzi Leishmania donovani Trypanosoma brucei Page 9 of 23 Which of the following microscopic features is characteristic of Candida albicans? Septate hyphae with acute-angle branching Broad, non-septate hyphae with irregular branching Budding yeast cells with pseudohyphae Spherical cells arranged in chains Page 10 of 23 What is the characteristic microscopic appearance of Treponema pallidum, the causative agent of syphilis? Gram-negative cocci in pairs Gram-positive rods Spirochetes Intracellular inclusion bodies Page 11 of 23 A 23 year old woman presents with dysuria. Urine nitrite test is negative. The bacteria is cultured. Biochemical tests are catalase +, coagulase -, novobiocin resistant. Which organism is the most likely cause? Staphylococcus saprophyticus Escherichia coli Proteus vulgaris Staphylococcus aureus Page 12 of 23 Which of the following bacteria produces swarming growth on blood agar? Proteus species Clostridium botulinum Escherichia coli Klebsiella pneumoniae Page 13 of 23 Which of the following pathogens is a leading cause of atypical pneumonia? Streptococcus pneumoniae Mycoplasma pneumoniae Chlamydia pneumoniae Legionella pneumophila Page 14 of 23 A 39 year old man with diabetes is admitted with a black necrotic eschar in the nasal cavity. Histological examination of the affected tissue shows broad non-septate hyphae with right-angled branching. What is the diagnosis? Aspergillosis Actinomycosis Candidiasis Mucormycosis Page 15 of 23 A 18 year old boy is admitted because of bleeding from a duodenal ulcer. Culture at 37 C grew urease positive curved bacteria. The most likely causative agent is? Campylobacter jejuni Enterococcus Helicobacter pylori Streptococcus faecalis Page 16 of 23 The infective stage of Plasmodia species to mosquitoes is: Sporozoites Hypnozoites Gametocytes Merozoites Page 17 of 23 Which of the following is the intermediate host for Schistosoma mansoni? Oncomelania species Biomphalaria species Bulinus species Segmentina species Page 18 of 23 A patient in the ward presents to you with recurrent UTIs and a chronic infected leg wound. He has a history of diabetes and is currently on chemotherapy for lung cancer. On biochemical testing of a sample taken from his urine at the microbiology lab: Indole +, hydrogen sulphide +, urease +, glucose fermentation with acid production. Which is the most likely microorganism? Proteus mirabilis Proteus vulgaris Klebsiella pneumoniae Pseudomonas aeruginosa Page 19 of 23 The infective stage of Leishmania is: Amastigote form Promastigote form Epimastigote form Sporozoite form Page 20 of 23 Which of the following fungi is most likely to be found within reticuloendothelial cells? Histoplasma capsulatum Sporothrix schenckii Cryptococcus neoformans Candida albicans Page 21 of 23 Which feature is unique to gram-positive bacteria? Cytoplasmic membrane endotoxin outer membrane peptidoglycan spore formation Page 22 of 23 Coxiella brunetti infects a variety of animals, including birds, farm animals, and pets. which route of infection is most common in humans? Ingestion Inhalation Mosquito bites Tick bite Penetration through broken skin Page 23 of 23 A patient has acute T cell lymphocytic leukemia. her leukemic cells are found to be producing a virus. The patient most likely acquired the viral infection via which route? blood transfusion contact with saliva respiratory droplets vertical genetic transmission Multiple Authors | WebsiteTOTW #26 - MicrobiologyTOTW #25 - PsychiatryTOTW #24 - BiochemistryTOTW #23 - Haematology Previous Post ON THE WARD: A CHECKLIST Next Post TOTW #12 - Surgery
