Ascp Practice Questions Microbiology 52 Correctly Answered Questions Latest Update

As a gram positive coccus I've become a bit fancy, Short chains and motile, plus I carry the gene VanC. A. Enterococcus faecium B. Staphylococcus aureus C. Enterococcus cassiloflavus D. Streptococcus pneumoniae {Ans: C; Enterococcus cassiloflavus is unique among the gram positive cocci (except for E. gallinarum which has similar properties) of being motile and carrying an intrinsic chromosomal mutation gene called Van C that confers low grade resistance to vancomycin. In contrast, many strains of Enterococcus faecium have high level vancomycin resistance through expression of an inducible, transposon-mediated gene, called Van A. Resistance to vancomycin has not developed with Staphylococcus aureus; rather, many strains have become methicillin resistant through expression of a gene called MecA. Many strains of Streptococcus pneumoniae have developed penicillin resistance via the alteration of penicillin binding proteins, a mechanism similar to the ampicillin resistance expressed by many strains of Enterococcus species.}C; This organism is a Plasmodium ring form. Note that this form consists of a "ring" of cytoplasm that is connected by a chromatin dot. Plasmodium species are the only parasites listed that actually invade unsuspecting red blood cells. {Ans: This parasite is found in blood. A. Plasmodium schizont B. Leishmania amastigote C.