Question

Analysis of the second swab has confirmed that the causative organism is Streptococcus pyogenes, a gram-positive organism. Imagine that you are the technician looking at the Gram stain from Shelly’s culture. What would you expect to see as you look through the microscope?

Answer 1

Answer:

I would expect to see purple, spherical-shaped organisms arranged in chainlike formations.

Explanation:

Gram-positive bacteria are bacteria classified by the color they turn in the staining method. Hans Christian Gram developed the staining method in 1884. The staining method uses crystal violet dye which is retained by the thick peptidoglycan cell wall found in gram-positive organisms.Gram-positive cocci include Staphylococcus (catalase positive) which grows clusters and Streptococcus (catalase negative) which grows in chains.