Name one bacterium that will appear as gram positive coccus after the gram stain?

staphylococci

Explanation:

Gram stain -

it is the method of staining which classify  the species of the bacteria into gram - positive and gram - negative .

This method distinguish the bacteria by its physical and chemical properties of the cell well of the bacteria .

1. In case of gram - positive , the stain is of color violet , because  to its thick cell wall .

and ,

2. In case of gram - negative , the stain is of pink color , because to thinner cell wall .

The bacterium , which shows Gram - positive coccus after the gram stain is staphylococci .