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Study sets matching "cell structure bacterial cells"

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Study sets matching "cell structure bacterial cells"

35 terms
Bacterial Cell Structure
Prokaryote
Eukaryote
Compound light microscope
Dark field
No nucleus... 70S (50S+30S)... Murein/Peptidoglycan... No mitochondria…
Nucleus... 80S (60S+40S)... Mitochondria, golgi, and ER... Cytoskeleton
2 lenses; one in eyepiece, one in objective... Bright field
For cells not readily stained
Prokaryote
No nucleus... 70S (50S+30S)... Murein/Peptidoglycan... No mitochondria…
Eukaryote
Nucleus... 80S (60S+40S)... Mitochondria, golgi, and ER... Cytoskeleton
29 terms
Bacterial Cell Structure- Reid
Plasma Membrane Structure
Plasma membrane Function
Membrane structure
Peptidoglycan Function
Protein within a phospholipid bilayer... - No sterols (*except m…
Barrier against ions... - Allows gradients, control over osmotic…
Alternating GlcNAc (NAG) anad MurNac (NAM)... Peptide tail on NA…
Essential to most bacteria... - Exceptions: molliculites, Chla…
Plasma Membrane Structure
Protein within a phospholipid bilayer... - No sterols (*except m…
Plasma membrane Function
Barrier against ions... - Allows gradients, control over osmotic…
54 terms
2: Bacterial Cell Structure
Coccus
Bacillus
Coccobacillus
Fusiform bacillus
Sphere
Rod
Rod (oval)
Long bacillus
Coccus
Sphere
Bacillus
Rod
Bacterial Cell Structure
coccus
bacillus
spiral
Diplococci
spherical , round shaped bacteria
rod-shaped bacteria
twisted shaped bacteria
pair of Cocci
coccus
spherical , round shaped bacteria
bacillus
rod-shaped bacteria
58 terms
Microbiology Bacterial Cell Structure
gram-positive cell wall
teichoic acid
lipotechoic acid
gram-negative cell wall
Mainly made up of peptidoglycan; within the peptidoglycan are…
Maintain cell envelope structure... Assist in binding to host ce…
Helps to anchor plasma membrane to peptidoglycan layer
Has a thin layer of peptidoglycan and a large periplasmic spa…
gram-positive cell wall
Mainly made up of peptidoglycan; within the peptidoglycan are…
teichoic acid
Maintain cell envelope structure... Assist in binding to host ce…
38 terms
[MI] Bacterial Cell Structure
Organization
Plasma Membrane
Peptidoglycan or Murein
Structure of peptigoglycan
Some structures conserved, others variable (may be used for s…
Structure:... - Proteins within a phospholipid bilayer.... - No s…
Cell wall. Gives the bacterium thickness, shape, and chemical…
Alternating NAG and NAM (has peptide tail that links covalent…
Organization
Some structures conserved, others variable (may be used for s…
Plasma Membrane
Structure:... - Proteins within a phospholipid bilayer.... - No s…
112 terms
Structure of Bacterial Cells
cocci
bacilli
spirochetes
pleomorphic
round shape
rod shape
spiral shape
variable shaped bacteria
cocci
round shape
bacilli
rod shape
16 terms
(3) Bacterial Cell Structure
FtsZ
MreB / MbL
CreS
MinCDE
tubulin homolog; creates septum / z disc for cell division
actin homolog; internal coil that maintains rod cell shape
keratin homolog; only found in vibrio bacteria; causes loss o…
restricts FtsZ formation to center of cell
FtsZ
tubulin homolog; creates septum / z disc for cell division
MreB / MbL
actin homolog; internal coil that maintains rod cell shape
85 terms
Bacterial Cell Structure
Diplo
Strepto
Staphylo
Tetrads
2 bacteria linked together
A chain of 3 or more
Grape-like clusters
4 bacteria arranged 2x2... oo... oo
Diplo
2 bacteria linked together
Strepto
A chain of 3 or more
65 terms
4 - Bacterial Cell Structure
Prokaryotic cell walls contain
Eukaryotic cell walls contain
What the prokaryotic analog to Tubulin?
What is the function of Fts Z?
peptidoglycan or pseudopeptidoglycan
cellulose or chitin
Fts Z
forms a z-ring in all bacterial cells. cell division.
Prokaryotic cell walls contain
peptidoglycan or pseudopeptidoglycan
Eukaryotic cell walls contain
cellulose or chitin
18 terms
Bacterial Cell Structure
Cocci
bacilli
vibrios
spirilla
spherical
rod-like
comma-shaped
rigid spirals
Cocci
spherical
bacilli
rod-like
46 terms
Bacterial Cell Structure and Metabolism
Flagella
Pili
Capsules
Differences between Gram negative and…
Used for locamotion... -Anchored in cell membranes by a basal bo…
-Shorter and thinner than flagella... -Function as attachment st…
-Capsules are an extracellular coating around a cell... -Capsule…
Cell envelope = all material external to and enclosing the cy…
Flagella
Used for locamotion... -Anchored in cell membranes by a basal bo…
Pili
-Shorter and thinner than flagella... -Function as attachment st…
50 terms
bacterial morphology and cell structure
what are the three domains living orga…
small differences between prokaryotes…
visual differences between prokaryotes…
when considering bacteria does genome…
bacteria, eukarya and archaea
no genome has NOTHING to do with size of bacteria... its importa…
what are the three domains living orga…
bacteria, eukarya and archaea
small differences between prokaryotes…
12 terms
Bacterial Cell Structures and Functions
ribosome
cytoplasm
slime layer
pili
The site of protein synthesis.
Mostly made of water but contains proteins, carbohydrates and…
Helps prevent the cell from drying out.
Small projections used for attachment to other bacterial cell…
ribosome
The site of protein synthesis.
cytoplasm
Mostly made of water but contains proteins, carbohydrates and…
66 terms
Bacterial Cell Structure
List the three parts of bacterial taxo…
What is the concept of taxonomic rank…
What is a way to remember the bacteria…
What are some typical bacterial cell m…
1) Archae... 2) Eukyra... 3) Bacteria
highest- ... 1) Domain... 2) Phylum... 3) Class ... 4) Order... 5) Fami…
Damn ... PHISH... Caught ... Ordinary... Flu ... Going ... South
1) flagellum... 2) pili... 3) capsule ... 4) cell envelope
List the three parts of bacterial taxo…
1) Archae... 2) Eukyra... 3) Bacteria
What is the concept of taxonomic rank…
highest- ... 1) Domain... 2) Phylum... 3) Class ... 4) Order... 5) Fami…
40 terms
2- Bacterial Cell Structure
What are so,e differences between euka…
microscope that has 2 lenses (one in t…
type of compound light microscope that…
type of compound light microscope that…
1. Prokaryotic cells do not have a nucleus.... 2. 70S ribosome i…
compound light microscope
bright field (light)
dark field
What are so,e differences between euka…
1. Prokaryotic cells do not have a nucleus.... 2. 70S ribosome i…
microscope that has 2 lenses (one in t…
compound light microscope
41 terms
Bacterial Cell Structure - Reid
Know Bacterial structure! Practice dra…
Gram positive features
Gran negative features
Picture: Gram + vs. Gram -
•Thick layer of PG, no outer membrane... •Contains teichoic acid…
•Thin layer of PG... •Outer membrane with LPS (toxic!!!) and por…
Know Bacterial structure! Practice dra…
Gram positive features
•Thick layer of PG, no outer membrane... •Contains teichoic acid…
35 terms
Bacterial Cell Structure (Bacterial Anatomy)
What is the only sterol located in the…
What is teh cell wall of bacterial cel…
In what ways can the peptidoglycan lay…
What are the structures that make up t…
Mycoplasmas
Peptidoglycan/Murein
Thickness, Shape, Chemical structure
Alternating NAG and NACC monomers
What is the only sterol located in the…
Mycoplasmas
What is teh cell wall of bacterial cel…
Peptidoglycan/Murein
41 terms
Bacterial Cell Structure - Reid
Know Bacterial structure! Practice dra…
Gram positive features
Gran negative features
Picture: Gram + vs. Gram -
•Thick layer of PG, no outer membrane... •Contains teichoic acid…
•Thin layer of PG... •Outer membrane with LPS (toxic!!!) and por…
Know Bacterial structure! Practice dra…
Gram positive features
•Thick layer of PG, no outer membrane... •Contains teichoic acid…
14 terms
Bacterial Cell Structure/ Function
Cell Membrane
Outer Membrane
Nucleoid
Ribosomes
Controls the flow of materials in and out of the cell pool
Controls flow of materials and portions of it are toxic to ma…
Genes for cell function
Sites for protein synthesis
Cell Membrane
Controls the flow of materials in and out of the cell pool
Outer Membrane
Controls flow of materials and portions of it are toxic to ma…
12 terms
Structure of Bacterial Cell
Flagella
Fimbriae
Capsule
Plasma Membrane
OUTSIDE CELL WALL; composed of protein subunits... Thin Threadli…
OUTSIDE CELL WALL... Thread-like structures and small. Not prese…
OUTSIDE OF CELL WALL... Layer made up of carbohydrates+lipids+pr…
INSIDE CELL WALL
Flagella
OUTSIDE CELL WALL; composed of protein subunits... Thin Threadli…
Fimbriae
OUTSIDE CELL WALL... Thread-like structures and small. Not prese…
43 terms
Bacterial & Archaeal Cell Structure
Bacteria Traits
Archea Traits
Eukaryote Traits
Coccus Shape
Thick, complex envelope with ridged cell wall... Compact genome…
Unique membrane & envelope structure
Nucleus... Extensive membranous organelles
spherical
Bacteria Traits
Thick, complex envelope with ridged cell wall... Compact genome…
Archea Traits
Unique membrane & envelope structure
29 terms
Bacterial Cell Structure- Reid
Plasma Membrane Structure
Plasma membrane Function
Membrane structure
Peptidoglycan Function
Protein within a phospholipid bilayer... - No sterols (*except m…
Barrier against ions... - Allows gradients, control over osmotic…
Alternating GlcNAc (NAG) anad MurNac (NAM)... Peptide tail on NA…
Essential to most bacteria... - Exceptions: molliculites, Chlamy…
Plasma Membrane Structure
Protein within a phospholipid bilayer... - No sterols (*except m…
Plasma membrane Function
Barrier against ions... - Allows gradients, control over osmotic…
14 terms
Bacterial cell structure
cell membrane
bac. chromosome/ nucleotide
ribosomes
actin cytoskeleton
all
all
all
all
cell membrane
all
bac. chromosome/ nucleotide
all
30 terms
bacterial cell structure
bacterial cell constituents
macromolecular structures
outer membrane
cell wall
macromolecules
envelope... `outer membrane... `murien... `periplasmic space... `inner nu…
significant barrier to the passage of macromolecules
structural strength and cell shape
bacterial cell constituents
macromolecules
macromolecular structures
envelope... `outer membrane... `murien... `periplasmic space... `inner nu…
19 terms
Cell structures & functions: The Bacterial Cells
cell wall
Gram-positive BACTERIA
Gram-negative BACTERIA
ARCHAEA cell wall
peptidoglycan: polysaccharide composed of N-acetylglycosamime…
cell wall 90% peptidoglycan; MANY layers; narrow periplasmic…
10% peptidoglycan; larger periplasmic space; ... an OUTER membra…
LACK peptidoglycan; contain pseudopeptidoglycan: composed of…
cell wall
peptidoglycan: polysaccharide composed of N-acetylglycosamime…
Gram-positive BACTERIA
cell wall 90% peptidoglycan; MANY layers; narrow periplasmic…
40 terms
Microbiology: Bacterial Cell Structure
Which cell has membrane bound organell…
Which cell does NOT have membrane boun…
Characteristics of Prokaryotes
Coccus Shaped bacteria
Eukaryotic Cell Structure
Prokaryotic Cell Structure
1. Most diverse group of cellular microbes... 2. live in not too…
spherical
Which cell has membrane bound organell…
Eukaryotic Cell Structure
Which cell does NOT have membrane boun…
Prokaryotic Cell Structure
44 terms
Bacterial Cell Structure
Eukaryotes v. Prokaryotes
Essential Components of Prokaryotes
Non-essential components of Prokaryotes
Cytosol
Eukaryotes: comparmentalized... Prokaryotes: simple, efficient,…
Cytosol, Nucleolus, Ribosomes, Cytoplasmic membrane, cell wall
Pilus/fimbria, Flagellum, Plasmid, Granule, Capsule/Glycocaly…
site of metabolic rxns, reserve granules, nucleoid, ribosomes…
Eukaryotes v. Prokaryotes
Eukaryotes: comparmentalized... Prokaryotes: simple, efficient,…
Essential Components of Prokaryotes
Cytosol, Nucleolus, Ribosomes, Cytoplasmic membrane, cell wall
52 terms
Bacterial Cell Structure
Cytoplasm
cytoplasm
Ribosomes
80s
-Densely packed with molecules and structures... -More like a ge…
__ consists of:... salts, sugars, amino acids, nucleotides, RNA,…
__ are responsible for protein synthesis... -Cytoplasmic ... -Sever…
Eukaryotic ribosome
Cytoplasm
-Densely packed with molecules and structures... -More like a ge…
cytoplasm
__ consists of:... salts, sugars, amino acids, nucleotides, RNA,…
37 terms
Bacterial cell structure
bacterial cell structure depends on wh…
what are the most common shapes?
arrangement is determined by what?
bacilli or bacilus
-size... -shape... - arrangement
cocci and rods
a) plane of division ... b) by separation or not
rods ... ex: coccobacilli- very short rods
bacterial cell structure depends on wh…
-size... -shape... - arrangement
what are the most common shapes?
cocci and rods
56 terms
Bacterial Cells: structure and Function
ribosomal features of eukaryotes
ribosomal features of prokaryotes
unicellular
multicellular and unicellular
80s (60s + 40s)
70s (50s+30s)
prokaryotes
eukaryotes
ribosomal features of eukaryotes
80s (60s + 40s)
ribosomal features of prokaryotes
70s (50s+30s)
13 terms
Bacterial Cell Organelles and Structures
Plasmid
Nucleoid
Ribosomes
Cytoplasm
Small, closed loops of DNA that can be transferred to other b…
The portion of the cell where genetic material is found
Make proteins for the cell
The gel-like fluid that allows materials to be transported ar…
Plasmid
Small, closed loops of DNA that can be transferred to other b…
Nucleoid
The portion of the cell where genetic material is found
8 terms
Bacterial Cell Structure
what is unique to gram neg bacteria
LPS components
lipid A moiety is responsible for
septic shock is when
outer membrane with lipopolysaccharide
- phospholipid component called LIPID A... - core polysaccharide…
many symptoms of disease like fever and hypotension and septi…
too many cytokines are produced
what is unique to gram neg bacteria
outer membrane with lipopolysaccharide
LPS components
- phospholipid component called LIPID A... - core polysaccharide…
65 terms
1. Bacterial Cell Structure
What percent is dry cell weight?
How much of the dry cell weight is pro…
What is the bacterial RNA content rela…
What are the macromolecular structures?
96%
Proteins= 55%... RNA = 20%... 80%rRNA... 15% tRNA... Unique components…
Higher
Envelope (outer membrane, murien, periplasmic space, inner me…
What percent is dry cell weight?
96%
How much of the dry cell weight is pro…
Proteins= 55%... RNA = 20%... 80%rRNA... 15% tRNA... Unique components…
24 terms
Bacterial Cell Structure
What is found in the plasma membrane o…
Describe the structure of Peptidoglycan
Teichoic and lipoteichoic acids
Structure of Outer membrane
Cardiolipin
alternating NAG and NAM; NAM contains tetrapeptid chain used…
Found in Gram-positives only; regulation of autolysis
found only in Gram neg and Chlamydiaceae; O-antigen; contains…
What is found in the plasma membrane o…
Cardiolipin
Describe the structure of Peptidoglycan
alternating NAG and NAM; NAM contains tetrapeptid chain used…
15 terms
Bacterial cell structure
Cell membrane
Bacterial chromosome/nucleoid
Bacteria
Ribosome
A thin sheet of a lipid and protein that surrounds the cytopl…
Composed of condensed DNA molecules. DNA directs all genetics…
Cell membrane, bacterial chromosome or nucleoid, ribosomes, a…
Tiny particles composed of proteins and RNA that are the site…
Cell membrane
A thin sheet of a lipid and protein that surrounds the cytopl…
Bacterial chromosome/nucleoid
Composed of condensed DNA molecules. DNA directs all genetics…
31 terms
5 Bacterial Cell Structure
Why do bacteria make good models for r…
What are the 3 domains?
What different morphologies might bact…
What makes bacterial cell walls?
fast, cheap, small, easy
Bacteria... Archaea... Eukarya
Rods... Cocci... Spirillum
peptidoglycan
Why do bacteria make good models for r…
fast, cheap, small, easy
What are the 3 domains?
Bacteria... Archaea... Eukarya
44 terms
Microbiology: Bacterial Cell Structure
What 2 molecules make up the peptidogl…
Does NAM or NAG have a peptide tail at…
What is the function of peptidoglycan?
Do Gram-positive or Gram-negative bact…
1. NAG... 2. NAM
NAM
1. Protection... 2. Shape... 3. Anchorage site
Gram-positive
What 2 molecules make up the peptidogl…
1. NAG... 2. NAM
Does NAM or NAG have a peptide tail at…
NAM
9 terms
Bacterial Cell Structure
Nucleoid
Plasmids
Cytoplasm
Ribosomes
DNA in bacterial cell is confined to this region.
Small, circular DNA fragments of extra chromosomal DNA. (& an…
Bounded by cell envelope. Fluid inside the cell mostly taken…
Translates the genetic message in mRNA into the production of…
Nucleoid
DNA in bacterial cell is confined to this region.
Plasmids
Small, circular DNA fragments of extra chromosomal DNA. (& an…
Bacterial Cell Structure + Metabolism
CCW flagella motion
CW flagella movement
2 Types of Pili w/functions
Structure of a typical bacterial capsule
Forward movement
Tumble
Fimbriae-Attachment to host... Fpilus- Genetic Conjugation
Polysaccharide
CCW flagella motion
Forward movement
CW flagella movement
Tumble
30 terms
Bacterial Cell Structure
Bacterial Cell Structure: cell membrane
Bacterial Cell Structure: cell wall
Bacterial Cell Structure: cell envelope
Cell Wall
-surrounds cytoplasm... -no sterols in bacteria
-cell membrane+peptidoglycan... -no peptidoglycan in archaeons
-cell membrane+peptidoglycan+outer membrane (gm -)+s layer
-single interlinked molecule... -encloses entire cell... -known as…
Bacterial Cell Structure: cell membrane
-surrounds cytoplasm... -no sterols in bacteria
Bacterial Cell Structure: cell wall
-cell membrane+peptidoglycan... -no peptidoglycan in archaeons
6 terms
external bacterial cell structure
pili (fimbrae)
bacterial flagella
glycocalyx
capsule
protein fibers extending from the surface of many bacteria ce…
long appendages extending from the cell surface; used for mot…
an adhering layer of polysaccharides and sometimes contains s…
thick glycocalyx external to the cells
pili (fimbrae)
protein fibers extending from the surface of many bacteria ce…
bacterial flagella
long appendages extending from the cell surface; used for mot…
27 terms
Bacterial cell structure
shapes of bacteria
Types of Cocci bacteria
Types of Bacilli bacteria
types of spiral bacteria
-coccus- spherical... -bacillus- rods... -spiral- twisted... -pleom…
-diplococci- remain a pair... -streptococci- remain in chains…
-Diplobacilli- remain as a pair... -streptobacilli- remain in c…
-vibrious- curved rods... -spirilla- helical shape and fairly r…
shapes of bacteria
-coccus- spherical... -bacillus- rods... -spiral- twisted... -pleom…
Types of Cocci bacteria
-diplococci- remain a pair... -streptococci- remain in chains…
16 terms
Structure of Bacterial and archael cells.
Short boxy
Long slender - Typhoid fever
Rods in chains, - Rat bite fever
Almost a cocci, Coccobacillus-
Bacillus anthrax
Salmonella enterica
Streptobacillus moniliformis
Pink eye and meningitis
Short boxy
Bacillus anthrax
Long slender - Typhoid fever
Salmonella enterica
34 terms
Bacterial Cell Structure
Bacterial Structure
Peptidoglycan Structure
Plasma Membrane Structure
PM Function
...
NAG: GlcNAc;... NAM: MurNac; Contains D amino acids. Great drug…
Proteins w/ PL Bilayer... NO sterols... Cardiolipin (also in Mitocho)
Barrier... Biosynth of lipids, peptidoglycan.... Nutrient/metabolit…
Bacterial Structure
...
Peptidoglycan Structure
NAG: GlcNAc;... NAM: MurNac; Contains D amino acids. Great drug…
141 terms
Bacterial Cell Structure
scanning electron microscope
fluorescent antibody test and phase co…
streptomyces
7µm
can only see the outside/surface of microorganism
used for when looking at living cells
filament in soil, then breaks up, and reproduces bunches
what is the size of a red blood cell?
scanning electron microscope
can only see the outside/surface of microorganism
fluorescent antibody test and phase co…
used for when looking at living cells
51 terms
2. Bacterial cell structure
Cocci (s., coccus) shape
diplococci (s., diplococcus) arrangement
streptococci arrangement
staphylococci arrangement
spheres
pairs
chains
grape-like clusters
Cocci (s., coccus) shape
spheres
diplococci (s., diplococcus) arrangement
pairs
49 terms
Bacterial Cell Structure
Streptococcus pneumoniae
Streptococcus mutans
Functions of capsule:
Biofilm
-has capsule... -proved that capsules protect cells from phagocy…
-has capsule... -causes dental cavities by forming plaque
-protects cells from phagocytosis... -promotes adherence of cert…
Specialized, surface-attached communities, composed of many b…
Streptococcus pneumoniae
-has capsule... -proved that capsules protect cells from phagocy…
Streptococcus mutans
-has capsule... -causes dental cavities by forming plaque
8 terms
Bacterial cell structure
All bacterium have
Cell membrane
Cell wall
Outer membrane
Circular floating DNA in cytoplasm and has both a cell wall a…
Phospholipid bilayer in fluid mosaic model
Peptiglycan where mycoloc acid is found
Had endotoxins and is virulent factor in gram-
All bacterium have
Circular floating DNA in cytoplasm and has both a cell wall a…
Cell membrane
Phospholipid bilayer in fluid mosaic model
22 terms
Bacterial Cell Structure Lecture
slime layer
capsule
s-layer
lysozymes do
outside cell... makes cell slide... made of carbohydrate
give cell wall strength
a lot like slime layer but stronger ... made of protein
destroy the cell wall
slime layer
outside cell... makes cell slide... made of carbohydrate
capsule
give cell wall strength
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