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?a. pink, rod-shaped organisms arranged in pairs
b. purple, spherical-shaped organisms arranged in grapelike clusters
c. pink, spherical-shaped organisms arranged in chainlike formations
d. purple, spherical-shaped organisms arranged in chainlike formations

Bacteria are the microscopic organisms and included in the prokaryotes as they do not have nucleus. Two main types of bacteria are gram positive bacteria and gram negative bacteria.

The gram positive bacteria has thick cell wall peptidoglycan cell layer and can uptake the crystal voilet stain. These bacteria seems purple under the microscope due to the uptake of stain. The bacteria Streptococcus pyogenes are spherical in shape and occurs in the cluster of chain.

Thus, the correct answer is option (d).

virtuematane virtuematane · Answer 2 · 2020-02-22T07:06:50+01:00

Answer:

Purple, spherical-shaped organisms arranged in chain-like formation. (Option D)

Explanation:

Streptococcus pyogenes is known as the gram-positive organism which belongs to the genus Streptococcus. They are extracellular and composed of non-sporing cocci, and non-motile.

If gram staining Streptococcus pyrogens and looking through the microscope it should look round, chain-like in structure because it is gram-positive bacteria which usually found in chains or pairs.