AAB Microbiology questions and answrs(latest upate)

Flow Cytomerty All of the following are nucleic acid amplification techniques EXCEPT which one? ELISA (enzyme-linked immunosorbent assay Which of the following laboratory procedures is routinely used for the detection of hepatitis B virus in blood donors? Herpesviridae In what family of Viruses, after primary infections does an individual become latently infected, after which the infection can be reactivated? Herpesviridae Which one of the following is a DNA virus? Rotavirus What Virus is the most frequent cause of gastroenteritis in children during the winter months? Rabies Which of the following viruses causes acute central nervous system disease? Direct antigen detection Influenza A viruses can most rapidly be detected by which procedure? Repeat in duplicate before confirming results If the initial HIV screening test is positive, then what should the next step of action be? Echoviruses Enteric cytopathic human orphan viruses are also known by what name? Orthmyxoviridae Which of the following is an RNA virus? SARS-CoV virus (Hantavirus,Ebola,smallpox) All of the following are considered potential viroterrorism agents EXCEPT which virus? Virion What is a mature virus particle containing a nucleic acid core surrounded by a protein coat, with or without an envelope called? Separates protozoan cysts and helminth eggs (Sediments all eggs,recovers operculated eggs, removes fecal debris and soluble material) All of the following are advantages of the sedimentation method of concentrating stool specimens EXCEPT which one? Yellow-brown What color does the cytoplasm of protozoan cysts stain in the iodine wet stool preparation? Anisakiasis Which zoonoses can be caused by the ingestion of raw fish infected with larvae from sashimi? Ancylostoma braziliense Cutaneous larva migrans or creeping eruption is caused by which organism? Trichinella spiralis Muscle biopsy is a diagnostic technique employed to detect which one of the following tissue roundworms? Enterobius vermicularis Which intestinal roundworm migrates to the Perianal skin to deposit embryonated eggs? Diphyllobothruim Latum Which tapeworm eggs have an operculum at one end and a small terminal knob at the other end? Taenia saginata Which tape worm could be acquired through the ingestion of medium rare steak? Blood flukes What is the common name for the schistosomes? Trematodes Which of the following worms has an oral and ventral cup shaped sucker in the adult stage? Plasmodium falciparum Which malarial species can be identified by the presence of crescent shaped gametocytes in the peripheral blood ? Giardia lamblia Which intestinal flagellate trophozoite has a sucking disc, two nuclei, eight flagella, and an axostyle? Hyphal form What is the infective form of dimorphic fungi for laboratory workers? Tuberculate macroconidia What does the tissue phase of histoplasma capsulatum characteristically show Cryptococcus neoformans Which one of the following organisms has a wide refractive capsule? Cigar shaped yeast cells Which of the following is found in the yeast phase of Sporothrix schenckii on culture medium at 37 degree Celsius? Trichophyton mentagrophytes penetrates the hair shaft Which statement is NOT true concerning the causative agents of dermatophytoses? Germ tube test Which test, when positive, can be used for the presumptive identification is Candida albicans? Contains chloramphenicol and cycloheximide How does Mycosel differ from Sabouraud dextrose agar? 10% KOH When preparing temporary mount of fungal elements, which one of the following acts as a clearing agent to eliminate debris and make fungal elements more prominent? Blastoconidia True yeast produces which one of the following in the asexual stage? Mycelium What term best describes the branching intertwining structures of molds? Superficial mycoses Which type of myocoses produces no cellular response by the host? Trush Which of the following fungal infections is another name for oral candidiasis? Minimum inhibitory concentration What does the size of the zone of growth inhibition correlate with if the correct procedure has been used? Measure the diameter of the outer zone When doing a susceptibility test with sulfonamides, there are two concentric zones around the disk. How should the zone be measured? Penicillin and methicillin Which of the following antibiotics are the best indicators of poor disk storage? Smaller zone If there is too much moisture on the surface of a Mueller-Hinton plate when performing a Kirby-Bauer susceptibility test, what will hap