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.
