What would we expect to see from the gram stain for Staphylococcus vs. Streptococcus

Describe the microscopic morphology of each sample observed with a Gram stain (S. aureus, P. aeruginosa, B. subtilis and dental plaque). Indicate the Gram reaction of each.

you are given a mixed culture of S. aureus, E. coli and P. aeruglinosa. How would you isolate each of them from this mixed culture? Besides usina a streak plate

You are working through the Gram Staining procedure on a mixed culture of S. aureus (G+) and E. coli (G-) (gram + & gram -) organisms respectively. If you accidentally use too much alcohol / acetone during the procedure, which of the following will likely happen? E. coliE. coli will appear to be Gram + will appear to be Gram +E. coli will appear to be Gram + S. aureus will appear to be Gram - Both organisms will appear colorless Both organisms will appear purple None of the answers are correct