Prokaryotes do not include ()?
A. mycoplasma
B. chlamydia
C. rickettsia
D. virus
E. none of the above
Who is the first man observed microorganism under microscope ()
A. Louis Paseur
B. Robert Kock
C. Leeuwenhoek
D. Walter Reed
E. none of the above
The special components of Gram-positive cell wall is ()
A. peptidoglycan
B. chitin
C. cholesterol
D. teichoic acids
E. none of the above
The antibacterial mechanism of penicillin is ()
A. interference of bacterial protein synthesis
B. inhibition of bacterial nucleic acid metabolism
C. inhibition of bacterial enzyme activity
D. interference peptidoglycan tetrapeptide side chain and pentapeptide cross-linked bridge
E. none of the above
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