【单选题】Penicillin was discovered by chance in 1928.
【单选题】The effect of penicillin on Staphylococcus aureus is ().
A.
Penicillin destroy the teichoic acid
B.
Penicillin damage the cell membrane
C.
Penicillin interferes with the connection between the cross-linking bridge and the tetrapeptide side chain
D.
Penicillin Split the glycan backbone
E.
Penicillin inhibit the bacterial protein synthesis
【单选题】Fleming discovered penicillin almost by______.
【简答题】A.To give an example of a bad reaction to penicillin. B.To show how penicillin has changed over the years. C.To emphasize the importance of antibiotics. D.To explain why penicillin requires a prescrip...
【简答题】正确安装三孔插座,应该是左孔( )线,右孔( )线,上孔( )线。