Lab Flashcards by Sean Belton

Q

Commensal

A

Host unaffected

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Q

Resevoir

A

Source of infection outside host

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Q

Tree shape on slant

A

Arborescent

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Q

Thick band on slant

A

Filiform

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Q

Thick band with undulations on slant

A

Echinulate

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Q

Thin branching strands on slant

A

Rhizoidal

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Q

Layer on broth surface

A

Pellicle

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Q

Stuff at bottom of broth

A

Sediment

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Q

Strands in margin

A

filamentous

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Q

Wiggly margin of colony

A

Erose

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Q

Pin point colonies on agar

A

Punctiform

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Q

Lens shaped colonies in the agar

A

Lenticulate growth

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Q

Dilution factor

A

Final/Initial

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Q

Dilution

A

Initial/Final

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Q

Psychrophile temps

A

down to 0 optimum at 10-15

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Q

thermophile temp

A

Grow at 55+

Q

Can survive high temps but doesn’t thrive

A

Thermoduric

Q

Thermal death point

A

Temperature to kill everything in 10 minutes

Q

optimum UV wavelength for killing bacteria

A

260 nm

Q

pyrimidines

A

Cytosine and thymine

Q

Countable range of colonies

A

30-300

Q

2 types of UV repair Enzymes

A

Dark reactive and photoreactive

Q

Enzymes that work outside the cell

A

Exoenzymes

Q

Enzymes that work inside the cell

A

Endoenzymes

Enzyme that breaks down hydrogen peroxide

Catalase

2 Enzymes that produce H2S

Cysteine Desulfhydrase and thiosulfate reductase

Enzyme that breaks down urea

urease

Final enzyme in anarobic ETC with nitrate as a TEA

Reductase

Enzyme that breaks down gelatin

Gelatinase

What is gelatin made of?

Proteins, partial breakdown of collagen

Most UV resistant bacteria we used

Bacillus Subtilis

Bacillus Stearothermophilus growth temp

55C

Bacteria that produces H2S

Proteus Vulgaris

Producer of prodigiosin pigment

Serratia Marcescens

3 genera that don't produce catalase despite living with O2

Streptococcus, Enterococcus and lactobacillus

species that reduce nitrate

P. Vulgaris and P.Aeruginosa