micro biology lab

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18 terms · irsc

baccili/baccilus

fusiform

comida sparillium

spirillium

spirochates

darkfield microscopy

lights specimen with dark background, good for unstained LIVING, organisms in liquid. Allows you to see size, shape and motility. pale objects, scatters blight rays by specimen and increases contast

phase contrastmicroscopy

used to view livging organisms, or spec that would be damaged, also creates a brighter image,.

temperature for incubating

35-37 degrees celcius-

chemotaxis

movement by a cell or organism in reaction to a chemical stimulus

brownian motion

the chaotic movement of colloidal particles, caused by collision with particles of the solvent in which they are dispersed

chemotaxis positive

movement toward a chemical stimulus

negative chemotaxis

away from chemical stimulis

pleomorphism

(biology) the appearance of two or more distinctly different forms in the life cycle of some organisms

polar flagella

One flagella at one end of a bacterium

peritrichous flagella

Flagella that cover the surface of the cell

mycolic acid

thick waxy membrane, gram stain is not able to cut through

acid fast example

t.b, leperacy

acid fast stain +

pink

acid fast -

blue

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