Chapter 4: Bacteria Anatomy

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1
What is the biggest bacteria found?
*Thiomargarita magnifica
2
Pairs of cocci name?
*diplococci
*diplobacilli
3
Chains of cocci name?
*streptococci
*streptobacilli
4
two cocci is called?
*diplococci
5
*four cocci are called?
*tetrad
6
big cluster of cocci called?
staphylococci
7
What is the smallest spiral bacteria called?
*vibrio
8
What is the thick long spiral bacteria called?
Spirillum
9
What is the thin and medium length spiral bacteria called?
*Spirochete
10
name of star shaped bacteria?
*stella
11
square shaped bacteria name?
*haloarcula
12
What are the three basic shapes of bacteria?
*coccus (round)
*bacillus (rod)
*spirilla (spiral)
13
What is the average size of bacteria?
*0.2-1.0 micro meters (diameter) to 2-8 micrometers (length)
14
What is a glycocalyx?
*outside cell wall (in between capsule and plasma membrane)
*extracellular polycellular polysaccharide allows cells to attatch
15
Purpose of bacterial capsule?
*prevent phagocytosis
16
Structure of slime layer?
unorganized and loose
17
What is seen with a capsule stain?
*gel like layer surrondes some microbes is stained
18
difference between s layer and slime layer?
19
What is the structure, function, and location of glycocalyx?
20
What is chemotaxis?
movement of organism or utlility in response to chemical stimulus
21
What do flagella enable?
*motility and chemotaxis
22
What three rings make up the flagella base?
*L ring (top)
*P ring (middle)
*C ring (base)
23
What is single flagellum called?
*monotrichous
24
What is bacteria with single flagellum at both ends called?
Amphitrichous
25
What is bacteria with two or more flagella at one or both ends called?
*Lophotrichous
26
What is bacteria with randomly distributed flagella (over entire cell) called?
*Peritrichous
27
What three movements are assoicated with flagella?
*running
*tumbling
*swimming
28
What movement is assoicated with a pilus?
twitch
29
What is structurally different about pilus' compared to flagella?
*pilus (thinner and shorter) "hair like appendages"
30
Term for bacteria attatching to a surface?
*gliding
31
What does tumbling mean (in terms of bacterial flagella)?
*random orientation
32
What way does counterclockwise rotation (by flagella) move bacteria cell?
*toward attractant (forward)
33
What does clockwise rotation do for bacterium?
*stops forward motion
*cell tumbles and changes direction
34
How do bacteria use Fimbriae?
*for attachment (in gram neg cells)
35
How do bacteria use pilli?
*transfer DNA from one cell to another
*helps with movement
36
How do spirochetes move?
*have endoflagella (specifically axial filaments)
37
How are endoflagella (in spirochetes) structured?
*anchored at one end of the cell
*extends the length of the cell
38
How do spirochetes move?
*rotation of axial filaments within the endoflagella
39
Structure of bacterial cell wall?
*single, interlinked molecule that encloses entire cell
40
What is the peptidoglycan structure of the cell wall?
*alternating series of subunits form glycan chains
*NAM
*NAG
41
NAM glycan chain stands for?
N-acetylmuramic acid
42
NAG glyclan chain stands for?
N-acetylglycosamine
43
What links glycan chaing in a peptidoglycan structure (forms cell wall)?
*tetrapeptide chain
44
What type of peptide bonds are found in gram-positive cells?
*peptide interbridge
45
Lipid A endotoxin makes up what portion of the outer membrane in gram neg bacteria?
*LPS
46
What are protoplasts?
spherical cells that results from loss of cell wall
47
How does PCN impact bacteria?
prevents new linkages in teh cell wall from forming
48
What are mollicutes?
*bacteria without the cell wall
49
What mechanism do bacteria use to bring things into cell?
*ABC transporter
*ATP-Binding Cassette Transporter
50
How does the ABC transporter system work?
*substrate binding protein brings solute to enzyme (transporter membrane protein)
51
What mechanism do bacteria use to get protein out of a cell?
*Efflux complex
*SS (secretion system)
52
What does SS stand for?
*secretion system
53
What type of bacteria produces endospores?
*gram positive bacilli
54
What does sporulation mean?
*endospore formation
55
What does germination mean?
*return to vegetative state
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