SPO2: Bacteriology Flashcards
Define: Prokaryotic
Without nucleus.
Define: Plasmids
Extra chromosomal element, often circular DNA.
Define: Binary fission
‘Division in half’. The method by which bacteria replicate.
Define: Aseptic technique
A procedure that is formed under sterile conditions.
Define: Spirilla
Spiral-shaped bacteria.
Define: Bacilli
Rod-shaped bacteria
Define: Cocci
Spherical-shaped bacteria
Peptidoglycan
A polymer consisting of sugars and amino acids that form a mesh-like layer outside the plasma membrane of a bacteria.
Gram-positive
A Gram-positive bacterium will have a higher amount of peptidoglycan, and absorbs more stain during the Gram stain procedure.
Gram-negative
A Gram-negative bacterium will have a lower amount of peptidoglycan, and absorbs less stains during the Gram stain procedure.
Gram-variable
A bacteria whose stain is inconsistent with Grams stains.
Zone of Inhibition
The area on an agar plate where growth of a control organism is prevented by an antibiotic usually placed on the agar surface.
Lawn culture
Innoculating a petri dish with a continuous covering of bacteria that forms a lawn like growth.
Antiseptic
Chemical used to control bacteria or fungi on living tissues.
Sterile
Free from bacteria or other living microorganisms.
Disinfectant
Chemicals used to control bacteria or fungi on non-living surfaces.
Septic
Infected with bacteria.
Biofilm
Multiple species of bacterial colonies bound together with a polysaccharide matirx.
Pathogen
A bacteria or virus which causes disease.
