Term
|
Definition
Binary Fission
1.) Cell replicates DNA
2.) Cytoplasmic membrane elongates; DNA seperates
3.) Crosswalls form; membrane invaginates
4.) Cross walls form completely
4.)Daughter cell may replicate.
|
|
|
Term
|
Definition
Subset of binary fission
-crosswalls dont form properly
-only happens for gram positive bacillus rod
-form v shape of palisade
|
|
|
Term
|
Definition
1.) Nucleiod replicates
2.)New nucleiod moves into bud
3.) Young bud forms
4.) Daughter cells
|
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
-Stiff spiral. Bacteria is actually spiral shaped
[image] |
|
|
Term
|
Definition
Takes spiral size when flagella flips around it |
|
|
Term
|
Definition
-often lack cell wall
-mishapen
|
|
|
Term
|
Definition
-cocci arrangements
-group of two |
|
|
Term
|
Definition
-cocci arrangement
-long chain |
|
|
Term
|
Definition
-cocci arrangements
-group of four square |
|
|
Term
|
Definition
-cocci arrangement
-cube 3-demensional |
|
|
Term
|
Definition
-cocci arrangement
-great cluster |
|
|
Term
|
Definition
|
|
Term
|
Definition
External sructure made of polysacccharide and proteins (sticky)
Functions:
1.) Works to prevent dessications(drying out)
2.) Works to provide ultraviolet protection(sunscreen)
3.) Allows cell to cell or cell tp surface adherance
4.) sequesters nutrients
|
|
|
Term
|
Definition
-type of glycocalyx
"like camoflague"
-solid,complete,sugar coating
-helps bacteria elude immune system |
|
|
Term
|
Definition
-type of glycocalyx
-loose diffuse layer
-this, mucousy
-biofilm formation-permanantly attaches bacteria to surface
|
|
|
Term
|
Definition
-external structure of prokaryotes
Function:
Propel bacteria forward by reversible rotation
Clockwise:Tumbles
Counterclockwise: Runs
|
|
|
Term
|
Definition
-when bacteria moves in response to a stimuli |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
Positive/Negative Stimuli |
|
Definition
Positive: more runs then tumbles
Negative: more tumbles,fewer runs |
|
|
Term
|
Definition
1.) Filament: long whip like structures; made of protein called flagellin
2.) Hook: Intermediate portion; connection of filament and basal body
3.) basal Body: Anchor; made up of rod and disks in cell wall
Gram positive=2 disks
Gram negative=4 protein disks |
|
|
Term
|
Definition
|
|
Term
|
Definition
-numerous, cover outside of cell
-provide slight movement(they twitch)
-aide in attachment(sick very easily-make initial attachment) |
|
|
Term
|
Definition
-forn a bridge that connects two bacteria cells together. Allows for genetic information transfer
Plasmid: shared genetic info |
|
|
Term
Cell Envelope
2 basic layers
|
|
Definition
1.) Cell wall: very few do not have
2.) cell Membrane: every bacteria/cell has one. |
|
|
Term
|
Definition
-cell wall
-sugar backbone
-strong but flexible
-prevents lysis
-maintains shape |
|
|
Term
Prokaryotic cell wall
Gram Postive
|
|
Definition
1.)Very thick peptidoglycan layer
2.) Contains Techoic acid(gives negative charge and offers support)
3.) Lipoteichoic acid: attach cell wall to membrane
4.) has tetrapeptide bridge and glycan linkage |
|
|
Term
Prokaryotic Cell Wall
Gram negative |
|
Definition
-thin layer of peptidoglycan layer between two cell membranes
-LPS outside membrane;gives negative charge;contains antigen o and lipid a
-Periplasmic space contains enzymes |
|
|
Term
Gram + /Gram - staining
Crystal Voilet Dye
|
|
Definition
1.)-attaches to the negative charge of the gram positive and negative; dye is positively charged
-Gram positive attaches to teichoric acid
-Gram negative attaches to LPS
2.) Gram Iodine: Mordant "cement" together. Helps anchor dye.
3.) Alcohol: Keeps purple dye in positive, gram negative becomes colorless
4.) Safrinin: counterstain. reddish/pink dye added to gram -: red/pink. Gram postive:remains purple
|
|
|
Term
|
Definition
-Differential stain to distinguish between 2 gram positive
-Composed of Mycolic acid(acid fast)
|
|
|
Term
How does acid fast staining work |
|
Definition
1.)Carbol Fuchsin: Primary dye (stains both acid fast and non acid fast)
Hot Pink
2.) Decolorize with acid: Differential step. Acid fast-hot pink. Nonacid fast- colorless.
3.) Methylene blue/green: Counterstain- blue or green non acid fast
|
|
|
Term
|
Definition
-stabalizes bacteria that lack a cell wall.
-prevents cell membrane from becoming to fluid under high temps
-prevents membrane from becomming rigid when temps are cold
Pleomorphic: variety of shapes
ex.) Mycoplasm-walking pneumonia
|
|
|
Term
|
Definition
-High concentration to low concentration
-does not use atp
|
|
|
Term
|
Definition
-Uses integral proteins.
>Channel proteins:only open to specific molecules
>Carrier Proteins: allow anything based on size and shape
*high concentration to low concentration |
|
|
Term
|
Definition
-movement of water
Isotonic: same water and particles
Hypertonic: Less H2O more particles
Hypotonic: more H2O less particles |
|
|
Term
Active Transport
Modified Carrier Proteins
|
|
Definition
Uniport: one molecule to come through in one direction
Antiport: 2 molecules in seperate directions
Symport: moves 2 molecules in same direction
|
|
|
Term
|
Definition
Cytoplasm: Gelatinous semi transparent elastic aqueous solution |
|
|
Term
|
Definition
-cytosol
-inclusions
-dna
-plasmids
-endospores
-cytoskeleton
-ribosomes
|
|
|
Term
|
Definition
-composed mostly of water
-contains: ions, carbohydrates, proteins, enzymes, lipids, and waste |
|
|
Term
|
Definition
-storage unit= stores excess nutrients and gas
-holds things for bacteria cells
-PHB: lipid polymer-similiar to plastic but biodegradeable
-Glycan: glycogen polymer-stores sugars
|
|
|
Term
|
Definition
located in nucleoid
-does not have lipid bilayer |
|
|
Term
|
Definition
EXTRA PIECE OF PROKARYOTIC DNA
-mostly in bacteria cells
-part of cytoplasma
-provides antibiotic resistance(makes bacteria virulent) |
|
|
Term
|
Definition
-part of cytoplasma
-forms cells basic shape
-made of actin
-helps cell divide during binary fission |
|
|
Term
|
Definition
produce proteins
-DNA---->MRNA---->Protein
^ ^
transcription Translation
Size: 70S
Large subunit: 50S
Small subunit: 30S |
|
|
Term
|
Definition
-bacteria collection of microorganisms that grow together and have a symbiotic relationship
-discovered by: Leeuwenhoeke
- contains bacteria that causes disease and infection |
|
|
Term
|
Definition
-living tissue
-medical devices
-industrial water
-natural water systems
-anywhere that is moist |
|
|
Term
|
Definition
-allows bacteria to survive in a hypotonic environement |
|
|
Term
|
Definition
-dormant structures produced by stressed bacteria |
|
|