Introduction To Microbiology

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  • Created by: KayshaN
  • Created on: 11-10-18 14:06
Cocci are bacteria that divide in a single plane. Which bacteria originates on the skin?
Staphylocci Endodermis
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Bacilli can be both gram + and gram - but what is another word for Bacilli?
Rods
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Curved Bacteria are stored into 3 sub catagories what are they?
Vibro(bent rod), Sprillium, Spirochete
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What is a function of Bacterial Capsules?
Protect against phagocytosis
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What is meant by a Virulence Factor?
Cause disease
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Peritrichous Bacterial move in a tumbling motion, why is this?
(CH2O)n
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? is added to cells, cells turn blue.? added, still blue. ? extracts the blue dye. Better nable to do this with ? bacteria. ? bacteria colourless.
Crystal Violet, Iodine, Acetone, Gram-Neg, Gram Neg
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After a Bacteriophage binds to a cell what happens?
Host cell transcribes/translates BP DNA
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Why is Salt Agar used as a selective media for S.aureus?
It kills all other bacteria apart from S.aureus
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What phase is shown by a steep inclin?
Exponential Phase
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When is the process of Batch Fermentaqtion stopped?
Before Death Phase
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What is the difference between Batch and Continuous?
Medium is added and culture broth removed throughout
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To do a viable cell count we csan use?
Serial Dilutions
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What is a Faculatative Aerobe?
Bacteria that grow everywhere but best with O2
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What do bacteria need for metabolism?
Source of Carbon
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What is the correct sequence for Alcohol Fermentation?
Pyruvate-->Ethanal-->Ethanol
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What does Taxonomy refer to?
The overall picture
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Which describes the Growth Phenotypes (classification)?
E.g. Ability to grow on carbon compounds, ferment sugar
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One problem with using Phenotypes is convergence? What does this mean?
Phenotypes may be similar because of similar environments not evolution
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Chromosomes removed from our strain, mix radiolabled, heat, reaneal. If 70% same species. What is this describing?
Hybridisation
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What specific molecule is used for Microbial Taxonomy?
16S rRNA
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After gram staining, what type would end up pink?
Gram negative
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Phage Typing: if bacteria is susceptible to phage what will happen on the plate?
Drops show clearing
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Solution with listed bacteria, into filter,nucleic acids stick. Gene probs (specific to bacteria) added only binds in DNA has gene. What is this describing?
Hybridisation with synthetic probe
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Absolute requirement for O2 is called?
Obligate Aerobes
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Optimal growth at <0.2 is called?
Microaerophiles
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What does Syntrophy mean?
Mixed culture of anerobes growing in close association (hydrogen transfer)
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Commensalism
Where one pair of organisms benefits and the other is unaffected
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What does communicable mean?
Spread from one host to another
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What do Collagenase enzymes do?
Hydrolyse collagen in connective tissues
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Toxigenicity is ?
Capacity of bacteria to produce toxins
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Enterotoxin is?
Effect upon gastrointestinal system
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Which bacteria release endotoxins?
Gram Negaitve
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Card 2

Front

Bacilli can be both gram + and gram - but what is another word for Bacilli?

Back

Rods

Card 3

Front

Curved Bacteria are stored into 3 sub catagories what are they?

Back

Preview of the front of card 3

Card 4

Front

What is a function of Bacterial Capsules?

Back

Preview of the front of card 4

Card 5

Front

What is meant by a Virulence Factor?

Back

Preview of the front of card 5
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