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	Microbiology Interview Questions & Answers Below we have listed all the Microbiology Interview Questions and answers. Feel free to comment on any Microbiology Interview Questions or answer by the comment feature available on the page. To buy an eBook containing 30,000 Interview Questions, with Answers, Click Here. View All Microbiology Interview Questions & Answers - Exam Mode / Learning Mode
Microbiology Interview Questions & Answers
Microbiology is the study of organisms, most of which are too small to be seen with the naked eye, including bacteria, algae, protozoa, and fungi, as well as acellular agents, such as viruses and prions. Eukaryotic micro-organisms possess membrane-bound cell organelles and include fungi and protists, whereas prokaryotic organisms—all of which are microorganisms—are conventionally classified as lacking membrane-bound organelles and include eubacteria and archaebacteria. Microbiologists traditionally relied on culture, staining, and microscopy. However, less than 1% of the microorganisms present in common environments can be cultured in isolation using current means. Microbiologists often rely on extraction or detection of nucleic acid, either DNA or RNA sequences.

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Question	Rating	View Answer
Serologic conversion to a positive test for HIV infection occurs? A. In 2-3 days B. In 3-4 weeks C. In 3-6 months D. May take up to 10 years		View Answer
Which of the following statements concerning Bartonella henselae is correct? A. Causes Trench Fever B. Causes Bacillary Angiomatosis in AIDS patients C. Causes Oroya Fever D. Causes Veruga Peruana		View Answer
You have just examined a patient from Brazil who has a chronic ulcer of his ear that has been present for 6 months. You are concerned that he has Leishmaniasis and want to differentiate L. mexicana from L. braziliensis. Which of the following statements about these 2 organisms is false? A. They are both transmitted by the sand fly B. Both appear as amastigotes in macrophages on biopsy C. Both can start as a cutaneous ulcer that eventually heals on its own D. Both heal with a residual scar E. Both will eventually cause lesions of the mucous membranes		View Answer
Itching around the rectum is commonly caused by the pinworm, Enterobius vermicularis. Which of the following is false regarding pinworms? A. It has a simple rectum to mouth life cycle (do not scratch your bum and suck your thumb) B. Diagnosis is best made by a stool O&P exam C. It is highly contagious infecting a number of members of a family at the same time D. Spread can be prevented by good hygiene E. The egg is oval, flat on one side and contains a single larvae folded over like a safety pin		View Answer
A 45 year old woman is admitted to the hospital with acute chest pain. On the second hospital day it is clear that she has had a myocardial infarction. Unfortunately, on the same day she develops acute diarrhea. A stool culture grows Salmonella. This infection is? A. Hospital acquired B. Nosocomial C. Iatrogenic D. Community acquired		View Answer
All Enterobacteriaceae share all of the following characteristics EXCEPT? A. Ferment glucose B. Reduce nitrates to nitrites C. Oxidase positive D. Gram negative E. Rod-shaped (bacilli)		View Answer
The major virulence factor of Haemophilus influenzae type b is? A. Its surface pili B. Its surface polysaccharides C. Its cell wall D. Its cell membrane		View Answer
Hepatitis A can be transmitted by? A. Changing diapers on an infected baby B. Having sex with someone who is infected C. Eating cooked meat D. Needle sticks injuries from infected patients		View Answer
Rabies virus produces infection of? A. Astrocytes B. Oligodendrocytes C. Neurons D. Macrophages		View Answer
What is the O antigen of Enterobacteriaceae? A. Cell surface polysaccharide B. A channel controlling substance taken into the organism. C. A flagellar protein D. A peptidoglycan matrix important for cellular rigidity E. Cell wall lipopolysaccharide		View Answer
Which of the following statements regarding mycoplasmas is NOT correct? A. Mycoplasmas are the smallest free-living micro-organisms. B. Mycoplasmas are resistant to cell wall active antibiotics. C. Mycoplasmas are common commensals of the respiratory and urogenital tracts. D. Mycoplasmas stain well with the Gram's stain. E. Mycoplasmas grow slowly on enriched media.		View Answer
A common type of nosocomial infection is? A. Urinary tract infection B. Meningitis C. Cellulitis D. Gastroenteritis		View Answer
Foscarnet interacts with which of the following viral enzymes? A. Pyrophosphate-binding site of the polymerase B. Protease C. Nucleoside reductase D. Reverse transcriptase		View Answer
Physical findings and other factors that should suggest the presence of septicemia in a particular patient are all of the following except? A. Shaking chills, spiking fevers B. Conjunctivitis C. Nausea, vomiting, diarrhea D. in elderly patients, decreased urine output or mental changes (confusion)		View Answer
Which of the following is the metabolically active form of Chlamydia trachomatis? A. Elementary body B. Jolley body C. Extracellular body D. Reticulate body E. None of the above		View Answer
The major groups of arthropod-borne viruses include? A. Togaviruses, Flaviviruses, and Bunyaviruses, B. Togaviruses, Rhabdoviruses, Reoviruses C. Reoviruses, Enteroviruses, Rhabdoviruses D. Retroviruses, Enteroviruses, Togaviruses		View Answer
You see a young child for evaluation of fever, abdominal pain, enlarged liver and eosinophilia. You suspect toxocariasis from Toxacara canis or cati. Which of the following statements is false about Toxocara? A. It can result in retinal lesions that can impair vision B. It is caused by the larvae of the "dog or cat ascaris" that wander through the body unable to find the lung to complete their life cycle C. It is associated with persons who eat dirt D. It can be spread by contact with human feces E. It is often found in young puppies or kittens		View Answer
Which of the following statements concerning Chlamydia trachomatis infections is NOT correct? A. Serology is the diagnostic test of choice in the diagnosis of acute infection. B. 50% of infants born to infected mothers during labor develop infections. C. Tetracycline's are useful for treatment of C. trachomatis infections. D. The clinical spectrum of C. trachomatis sexually transmitted diseases is similar to N. gonorrhoea E. e. Endemic trachoma is a major cause of blindness worldwide.		View Answer
Anaerobic infections are? A. Often continuous to mucosal surfaces B. Associated with highly vascularized tissue C. Gram negative D. Most likely to occur in the lung with its high oxygen level		View Answer
An important characteristic of all fungal infections is that? A. They are usually transmitted from person to person B. They are usually simple and straightforward to treat C. They cause serious disease in debilitated, and/or immunocompromised patients D. They are usually mixed infections with a combination of fungi and bacteria in the same tissue site		View Answer