Microbiology
Q: _____ is to ______ as spheres are to rods.
Cocci, bacilli
Q: This is a local and superficial skin infection of the deep dermis and subcutaneous tissue?
Cellulitis
Q: Peptidoglycan inhibits this response by the host cell.
Inflammatory response
Q: ____ is to _____ as clusters are to chains.
Staph, strep
Q: This is a bacterium present on the skin in the majority of healthy individuals.
Staphylococcus aureus
Q: These are the 2 types of immune responses involved in fighting a Staph infection.
Innate, adaptive – Humoral (B-cells) and cell-mediated (T cells)
Q: This bacterial species 2 defining enzymes. One that is able to clot blood plasma. Another that is able to convert H2O2 → H2O and O2.
coagulase, catalase
Q: What percent of the population is likely colonized by S. aureus?
¼ per Osmosis, 30% population has colonized nostrils, but most people 50% have S. aureus on skin
Q: These are the cells primarily involved in mounting the innate immune response & this is their main function.
Neutrophils
Q: This component of the cell wall confers Gram-positive behavior on Gram staining.
Peptidoglycan on the cell wall of bacteria
Q: These are risk factors to developing skin infections (S. aureus infections).
Immunosuppression, IVDA/use, recent invasive procedure, foreign material in body (prosthetics, catheters, sutures), dialysis
Q: This is how a “boil” develops.
Invasion of the bacterium –> furuncle (pus) –> localized skin infection → many boils = carbuncle
Q: This is a substance made of glycosaminoglycan chains with short peptides. It resides on cell walls of some bacterial species.
Peptidoglycan
Q: This is the terminology that identifies S. aureus as capable of living in aerobic and anaerobic conditions, like the skin!!! (sorry micro question in skin)
Facultative anaerobe