Bacteria Bacteria. Peptidoglycan Cell wall Cell membrane Ribosome Flagellum DNA Pili Section 19-1...
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Transcript of Bacteria Bacteria. Peptidoglycan Cell wall Cell membrane Ribosome Flagellum DNA Pili Section 19-1...
BacteriaBacteria
Peptidoglycan
Cell wall
Cell membrane
Ribosome
Flagellum DNA Pili
Section 19-1Eubacterium Structure
ClassificationClassification
DKPCOFGSDKPCOFGS
Domain Bacteria - Kingdom Domain Bacteria - Kingdom EubacteriaEubacteria
Domain Archae - Kingdom Domain Archae - Kingdom ArchaebacteriaArchaebacteria
Domain Eukarya - Kingdom Animal, Domain Eukarya - Kingdom Animal, Plant, Protist, FungiPlant, Protist, Fungi
Classification Classification
What is the name of this What is the name of this animal?animal?
PumaPuma CougarCougar Mountain LionMountain Lion PantherPanther
Adaptation?Adaptation?
EubacteriaEubacteria
Live everywhereLive everywhere cell walls contain - peptidoglycancell walls contain - peptidoglycan Ex. E. coliEx. E. coli
ArchaebacteriaArchaebacteria
Cell walls lack peptidoglycanCell walls lack peptidoglycan genes are similar to eukaryotesgenes are similar to eukaryotes harsh environmentsharsh environments
methanogens - mud, animal digestive methanogens - mud, animal digestive tractstracts
halophiles - very salty environments, halophiles - very salty environments, Great Salt LakeGreat Salt Lake
thermophiles - hot springsthermophiles - hot springs
IdentificationIdentification Shapes - bacilli, cocci, spirillaShapes - bacilli, cocci, spirilla Cell Walls - gram positive, Cell Walls - gram positive,
negativenegative Movement - Movement -
flagellaflagella glideglide no movement no movement
StaphylococcusStaphylococcus
SpirillumSpirillum
BacillusBacillus
Obtaining EnergyObtaining Energy
Autotrophs Autotrophs photoautotrophs - cyanobacteria photoautotrophs - cyanobacteria
(everywhere)(everywhere) chemoautotrophs - hydrothermal vents, chemoautotrophs - hydrothermal vents,
energy from chemical reactionsenergy from chemical reactions HeterotrophsHeterotrophs Photoheterotrophs - Photoheterotrophs -
sun = energy sun = energy organic compounds = nutritionorganic compounds = nutrition
Energy ReleaseEnergy Release
Obligate Aerobes - require oxygenObligate Aerobes - require oxygen Obligate Anaerobes - oxygen deadlyObligate Anaerobes - oxygen deadly
botulinum - causes botulism in unsterile botulinum - causes botulism in unsterile cans, bulging canscans, bulging cans
Facultative anaerobes - with or Facultative anaerobes - with or without oxygenwithout oxygen switch between respiration and switch between respiration and
fermentation, abundantfermentation, abundant
Growth and Growth and ReproductionReproduction
Some can divide every 20 min.Some can divide every 20 min. Binary fission - asexual reproductionBinary fission - asexual reproduction
2X normal size, DNA divides and cell 2X normal size, DNA divides and cell divisiondivision
ConjugationConjugation exchange of genes through a hollow bridgeexchange of genes through a hollow bridge increases genetic diversityincreases genetic diversity
Endospores - proteins coats form in Endospores - proteins coats form in harsh conditions, up to centuriesharsh conditions, up to centuries
BINARY FISSION
CONJUGATION
Bacteria in NatureBacteria in Nature
ProducersProducers DecomposersDecomposers Nitrogen FixationNitrogen Fixation
Rhizobium – symbiosis with Rhizobium – symbiosis with soybeanssoybeans
Nitrogen Nitrogen Ammonia Ammonia
Tooth decay
Lyme disease
Tetanus
Tuberculosis
Salmonella food poisoning
Pneumonia
Cholera
Streptococcus mutans
Borrelia burgdorferi
Clostridium tetani
Mycobacterium tuberculosis
Salmonella enteritidis
Streptococcus pneumoniae
Vibrio cholerae
Regular dental hygiene
Protection from tick bites
Current tetanus vaccination
Vaccination
Proper food-handling practices
Maintaining good health
Clean water supplies
Disease Pathogen Prevention
Bacteria and Disease
•Damage tissue by using it for food
•Release toxins
•Antibiotics
Human Uses of BacteriaHuman Uses of Bacteria
Oil EatersOil Eaters Sewage TreatmentSewage Treatment Drug ManufacturersDrug Manufacturers
Genetic engineeringGenetic engineering
Controlling BacteriaControlling Bacteria
•Sterilization
•Heat or chemicals
•Cooking
•Refrigeration
Quiz 1Quiz 1
1. Compare AND contrast the 1. Compare AND contrast the Domains Bacteria and Archaea.Domains Bacteria and Archaea.2. I.D. the 3 shapes of bacteria and 2. I.D. the 3 shapes of bacteria and give the names.give the names.
3. Explain a min. of 2 types of 3. Explain a min. of 2 types of bacteria movement methods.bacteria movement methods.
4.Explain the 2 types of autotrophs.4.Explain the 2 types of autotrophs. BONUS: Explain the purpose of PiliBONUS: Explain the purpose of Pili