Study sets matching "cell structure bacterial cells"

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Study sets matching "cell structure bacterial cells"

Cell structure bacterial cells
Cell membrane
Cell wall
Cytoplasm
Capsule
Controls what enters and leaves the cell
Protection and support
Where all chemical reactions happen
Outer layers (can be slimy)
Cell membrane
Controls what enters and leaves the cell
Cell wall
Protection and support
15 terms
Bacterial cell structure (bacterial anatomy)
Bacterial Plasma membrane is composed…
Peptidoglycan makes up the ___________…
What are two GRAM (+) unique acids tha…
OUTER MEMBRANE... Outer membranes are fo…
phospholipid bilayer with cardiolipin and no sterols ... Cytoso…
Cell wall... Gram (+) and Gram (-) bacteria... osmotic lysis... PAMP
Teichoic Acid... Lipoteichoic acid
GRAM (-)... 1. Lipopolysaccharide (LPS) outer leaflet= O-antige…
Bacterial Plasma membrane is composed…
phospholipid bilayer with cardiolipin and no sterols ... Cytoso…
Peptidoglycan makes up the ___________…
Cell wall... Gram (+) and Gram (-) bacteria... osmotic lysis... PAMP
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
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
43 terms
Bacterial Cell Structure
Bacterial Structure -- General Organiz…
Plasma Membrane -- Structure
Plasma Membrane -- Function
PG Layer Differs Btw Different Types A…
Some Structure Conversed ... Other Quite Variable -- May Be Used…
Proteins w/in Phospholipid Bilayer ... No Sterols (Except Mycopl…
Barrier Against Aqueous Ions -- Allows Gradients, Control Ove…
Thickness... Shape... Chemical Structure
Bacterial Structure -- General Organiz…
Some Structure Conversed ... Other Quite Variable -- May Be Used…
Plasma Membrane -- Structure
Proteins w/in Phospholipid Bilayer ... No Sterols (Except Mycopl…
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…
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
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…
(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
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
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
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…
6 terms
Structure of bacterial cell
flagellum
Ribosome
nucleoid
plasma membrane
A long, hairlike structure that grows out of a cell and enabl…
Cytoplasmic organelles at which proteins are synthesized.
A dense region of DNA in a prokaryotic cell.
A thin, phospholipid and protein molecule bilayer that encaps…
flagellum
A long, hairlike structure that grows out of a cell and enabl…
Ribosome
Cytoplasmic organelles at which proteins are synthesized.
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…
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
Bacterial cell structure
cell membrane
bac. chromosome/ nucleotide
ribosomes
actin cytoskeleton
all
all
all
all
cell membrane
all
bac. chromosome/ nucleotide
all
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…
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…
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…
Bacterial Cell Structures and Functions
Cell membrane
Cell wall
Cytoplasm
Genetic material (DNA)
Cell boundary that controls what enters and leaves the cell.
A rigid layer that supports the cell and provides shape.
Internal fluid that contains the cell structures.
A molecule that determines the nature of cell structures and…
Cell membrane
Cell boundary that controls what enters and leaves the cell.
Cell wall
A rigid layer that supports the cell and provides shape.
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…
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…
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,…
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
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
24 terms
Bacterial Cell Structure
Antibacterial Drug Targets
External Prokaryotic Features
Prokaryote Cell Envelope
Internal Prokaryotic Features
Cell wall inhibitors... Cell Membrane... DNA/RNA... Protein Synthesis…
Flagella, Pili, Fimbriae... Glycocalyx
Cell Wall ... Cell Membrane
Cytoplasm... Ribosomes... Inclusions... Nucleoid/Chromosome... Actin Cyto…
Antibacterial Drug Targets
Cell wall inhibitors... Cell Membrane... DNA/RNA... Protein Synthesis…
External Prokaryotic Features
Flagella, Pili, Fimbriae... Glycocalyx
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)
39 terms
Structure of bacterial cells (7)
Gram positive & Gram negative... shapes a…
Some bacteria have gelatinous, sticky…
Capsule/ Glycocalyx ... Composed of ...
Protect bacteria from immune system ce…
single cocci, cocci in chains, cocci in groups... single rod, ro…
capsule or glycocalyx
polysaccharides, polypeptides or both, which are made by insi…
Capsule/ Glycocalyx
Gram positive & Gram negative... shapes a…
single cocci, cocci in chains, cocci in groups... single rod, ro…
Some bacteria have gelatinous, sticky…
capsule or glycocalyx
Bacterial Cell Structures
Capsule
Cell wall
Cell Membrane
Ribosomes
Keeps the cell from drying out and helps it stick to things
Thick covering that maintains the overall shape
Inner layer acting as a barrier for things entering or exiting
Make proteins
Capsule
Keeps the cell from drying out and helps it stick to things
Cell wall
Thick covering that maintains the overall shape
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…
116 terms
Ch. 3: Bacterial Cell Structure
Cocci
Diplococci
Streptococcus
Staphylococcus
-Roughly spherical cells... -Can exist singly or can be associat…
-Arise when cocci divide and remain together to form pairs
-Occur when cells adhere after repeated divisions in one plan…
-Occur when cocci divide in random plans to generate irregula…
Cocci
-Roughly spherical cells... -Can exist singly or can be associat…
Diplococci
-Arise when cocci divide and remain together to form pairs
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…
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…
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…
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
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
31 terms
Bacterial Morphology and Cell Structure
Eukaryotic cell
Prokaryotic cell
Coccus
Bacillus
-Contains much more... -Nuclear membrane... -80S ribosome... -ER... -Mult…
-Cell wall... -70S ribosomes... -Plasmid... -Cell membrane... -Singular c…
spherical
rod-shaped
Eukaryotic cell
-Contains much more... -Nuclear membrane... -80S ribosome... -ER... -Mult…
Prokaryotic cell
-Cell wall... -70S ribosomes... -Plasmid... -Cell membrane... -Singular c…
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
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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