Question

Microbiology - Gram Positive (ONLY answer)

[Q1] How can you differentiate Staphylococcus and Streptococcus under the microscope?      

[Q2] Your organism is catalase negative and produces a black precipiate on bile. What other test would likely be positive?

Answer 1

Solution:

[Q1].We can differentiate staphylococcus and streptococcus under the microscope.staphylococcus cells are arranged in clusters and also present in pairs, short chains and division occurs in multiple directions.streptococcus show a single short chain containing round cells and division occurs in single direction

[Q2.]1.Bile solubility test.
2.Optochin sensitivity test (S. pneumoniae).
3.Bacitracin test.
4.CAMP test.
5.Test of hemolysis