Microorganisms, Humans & Microorganisms

what is symbiosis?

general relationship between two unrelated organisms that live close together

what are the most common bacteria responsible for SSI’s

Gram-positive Cocci, Staphylococcus Aureus, Strepococcus Pyogenes

what are single-celled prokaryotes called?

Archaea

what cell trait determines its gram stain classification?

cell wall

What is a flegellum?

long whip-like appendage that propels the cell in different directions

What defines and anaerobe?

Cannot live in the presence of oxygen

what is the most common bacteria carried by health care workers?

Staphylococcus Aureus

what are the signs and symptoms of Streptococcus pyogenes?

fever, sore throat, swollen lymph nodes, red tonsils, and skin infections, with redness or crusting

what bacteria is responsible for gas gangrene?

Clostridium Perfringens

How is HIV transmitted?

when the body fluids of an infected person are deposited on the mucous membranes of another person

what does HIV evolve into over time?

AIDS

what is CJD?

Creutzfeldt-Jakob disease

where can E. coli naturally be found in the human body?

gastrointestinal trat

what is the shape of bacilli?

rod-shaped bacteria, slightly curved or straight

What defines an aerobic bacterium?

it requires oxygen to grow

what are the characteristics of a spore?

produce a multilayered wall around genetic material, can resist boiling

what are the characteristics of a virus?

a tiny, nonliving infectious agent
not a cell

what are indigenous microbes?

native, long-term microbial communities

What is Commensalism?

one organism uses another to meet its physiological needs but cause no harm to the host

what is mutualism?

each of the organisms benefit from their relationship in the environment

what is parasitism?

organism that lives with another organism and gains an advantage at the expense of that organism

how do bacteria divide?

binary fission

what is the shape and form of streptococci?

spherical bacteria that are in chains

what is the shape and form of staphylococci?

spherical bacteria that are in clusters

what bacteria causes necrotizing fascilitis?

streptococcus pyogenes

what bacterium causes PID?

Neisseria Meningitidis

what are the defining traits of facultative bacteria?

can live and grow with or without oxygen

What are examples of protozoans?

Amoeba, Entamoeba histolytica, Giardia intestinalis, Cryptosporidium spp, and Toxoplasma gondii

what are the characteristic of fungi?

2 groups: mold and yeast

yeast are unicellular, and molds are multicellular

have a cell wall

what is a bacteriophage?

viruses that use bacteria as the host cell

what are the two different cycles that viruses reproduce by?

Lytic cycle and lysogenic cycle

what types of microorganisms is responsible for CJD?

Prions

what defines microbial death?

the permanent loss of a microbe’s ability to reproduce

what bacteria is most frequently found on burn paitents?

Pseudomonas Aeruginosa

what types of microorganisms are responsible for mycotic infections?

fungi

which virus has severa