Class 3 Microbiology Flashcards
Fungi
Eukaryotes, have a nucleus,multicellular
Virus
Noncellular parasites of other cells, consists of nucleic acid
Protozoa
Unicellular eukaryotic microbes
Fermentation
Occurs when microbes convert carbohydrates to organic product
Pasteurize
Mildly heating food or beverage to kill pathogenic organisms
Vaccination
The administration of antigenic material in order to stimulate an individual immune system to develop immunity
Biofilm
Bacterial communities that form slimy layers on the surface of things.
Microbiota
The normal micro organism in and on our body
Microscope
Ocular lens: Eye piece
Body tube: transmits the image from the objective lens to the ocular lens
Objective lens: primary lenses that magnify the specimen 10 X, 40x, 100x
Stage: hold the microscope slide in position
Condenser: focus light through the specimen
Diaphragm: control for amount of light entering the condenser
Illuminator: light source
Coarse focusing knob: for bringing the specimen into focus under low-power 10x
Fine focusing knob: for focusing under high-power 40 X and 100 x
What is a mordant
Used to improve bonding between stain and specimen. Intensifies the staining
Gram-positive versus gram-negative
Gram-positive: Retain the purple stain after the decolorizer
Gram-negative: invisible use safranin
Gram-positive
Thick peptidoglycan cell wall
Cell anatomy
Prokaryotes: lack a nucleus and other membrane enclosed organelles
Eukaryotes: have a nucleus and membrane enclosed organelles ( fungi, plants and animals and then)
Plasma
Encloses the cytoplasm, is a selective barrier to the cell
Cytoplasm
Fluid inside the cell 80% water
