Which disease is not caused by Streptococcus?
A. scarlet fever,
B. glomerulonephritis,
C. rheumatic heart disease,
D. enteritis,
查看答案
Which statement is right about Streptococcus?
Arranged in Y letter;
B. Arranged in chain,
C. arranged in a cluster of grapes;
D. It has O-antigen,
Which statement is not right about streptococcus?
A. Gram positve;
B. obligate anaerobe,
C. It has no spore;
D. It has no flagellum
Which bacteria can not cause hemolysis on bloody agar plate?
A. Streptococcus varidans,
B. Streptococcus pyogenes,
C. Streptococcus nonhemolyticus
D. Staphylococcus aureus.
Which one is the property of the hemolytic cycle surrounding the colony of S. pyogenes on bloody plate.
A. Green cycle in diameter of 1-2mm;
B. Transparent cycle in diameter of 1-2mm;
C. Transparent cycle in diameter of 2-4mm;
D. Green cycle in diameter of 2-4mm;
微信支付 
支付宝支付