Staphylococcus and Streptococcus Lab Review

A set of flashcards designed for reviewing key concepts from the Staphylococcus and Streptococcus laboratory exercises.

m-Staphylococcus Broth

A selective medium that allows for the growth of Staphylococcus species.

Mannitol Salt Agar (MSA)

A selective and differential medium used to isolate and differentiate Staphylococcus species based on mannitol fermentation.

Staphylococcus Medium 110

A medium advantageous for selective isolation of Staphylococcus species; differs from MSA in its formulation and selective agents.

Blood Agar

A rich medium used to detect hemolysis patterns in bacteria.

Beta hemolysis

Complete lysis of red blood cells, resulting in a clear zone around bacterial colonies.

Alpha hemolysis

Partial lysis of red blood cells, resulting in a greenish or brownish discoloration around bacterial colonies.

Gamma hemolysis

No lysis of red blood cells, observed as no change in the medium around bacterial colonies.

Coagulase Test

A diagnostic test used to determine the presence of coagulase enzyme, differentiating Staphylococcus aureus as positive.

Novobiocin Susceptibility Test

A test to determine resistance or susceptibility of Staphylococcus species to the antibiotic novobiocin.

Streptococcus

A genus of bacteria characterized by Gram-positive cocci that form chains.

Catalase Test

A test to determine the presence of the enzyme catalase that breaks down hydrogen peroxide into water and oxygen.

Bacitracin Test

A sensitivity test used to identify Streptococcus pyogenes, which is susceptible to bacitracin.

Optochin Test

A susceptibility test used to differentiate Streptococcus pneumoniae from other alpha-hemolytic Streptococci.

Bile Esculin Agar

A medium used to identify organisms that can hydrolyze esculin in the presence of bile.

Salt Tolerance Test

A test to determine the ability of an organism to grow in a high-salt environment.