A. It is Gram positive, B. They contain metachromatic granules ; C. They are anrranged in Y letter, D. They have endospore,
A. Loffler’s medium Bloody agar plate; Chocolate plate; D. TCBS plate;
A. acquired by transformation, B. acquired by conjugation C. Acquired by lysogenic conversion; D. acquired by transduction;
A. It blocks synthesis of protein via breaking the ribosome, B. It blocks synthesis of protein via inactivating elongation factor-2; C. It makes pore on the membrane of cells; D. It degrades cellular DNA to kill the cells;
A. toxoid B. killed vaccine; C. attenuated vaccine; D. capsular polysaccharide;
A. Increase cAMP level; Break ribosome; C. inactivate EF-2 to block protein synthesis; D. Cause damage to ciliated cells of respiratory tract;
All corynebacteria diphtheria can cause disease B. It has granules on its terminals; C. It can form black colony in tellurites blood agar plate; D. Administration of toxoid of diphtheria toxin can prevent disease.
A. fecal - oral route; B. respiratory route; C. sexual contact D. blood transfusion
A. It is in a virulent plasmid; B. It is in the transposon; C. It is in a R plasmid D. It is in the prophage;
A. toxemia B. septicemia C. endotoxemia D. bacteriemia
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