Question

A patient sample is sent to the lab and gram stained

some cells look pink, the others weakly purple.it is called 'Gram indeterminate'

Furthermore, the culture grows slowly and looks clumpy.

What might be found in the cell wall of this bacteria to directly cause these results?

1-Mycolic acid

2-Outer membrane

3-LPS

4-Peptidoglycans

You are trying to conjugate bacterial population A with the gene for ampicillin resistance to bacterial population B., which lacks the ampicillin resistance. After multiple attempts at conjugation, population B is still sensitive to ampicillin. Which is the more likely explanation?

1- Population A doesn't have pili

2- Population A does have fimbriae

3- Population has an axial filament

4- Population B does not have flagella

Please explain

3- The fact that bacteria can absorb dye molecule that animal cells do not led to what advance in microbiology?

1-Fleming's discovery of penicillin

2-The formation of Koch's postulates

3-Lister's development of aseptic technique

4-Erich development the antimicrobial Salvarsan