The Cocci of Medical Importance

The following statements are true regarding catalase, EXCEPT:

• It is an enzyme.

• It is released by Streptococci species.

• It converts hydrogen peroxide to water and oxygen.

• It functions as defence mechanism for bacteria.

Staphylococcus aureus is

• Gram negative.

• coagulase positive.

• forms spore.

• facultative anaerobes.

The following are the important exotoxins of Staphylococcus aureus, EXCEPT:

• Coagulase.

• Cytotoxins.

• Erythrogenic toxins.

• Toxic shock syndrome toxins.

The structural components virulence factors in Staphylococcus aureus includes:

Streptococcus pyogenes

• is Group B in Lancefield group.

• causes pharyngitis.

• contains M-protein.

• beta-hemolytic.

The virulence factors of streptococcus species include:

Characteristics of Neisseria species:

• Contains flagella

• Gram negative

• Have pili.

• strict parasites

What is the function of Microbial Surface Recognizing Adhesive Matrix Molecules (MSRAMMS)?