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Bacteria Bacteria. Peptidoglycan Cell wall Cell membrane Ribosome Flagellum DNA Pili Section 19-1 Eubacterium Structure.

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Presentation on theme: "Bacteria Bacteria. Peptidoglycan Cell wall Cell membrane Ribosome Flagellum DNA Pili Section 19-1 Eubacterium Structure."— Presentation transcript:

1 Bacteria Bacteria

2 Peptidoglycan Cell wall Cell membrane Ribosome Flagellum DNA Pili Section 19-1 Eubacterium Structure

3 Classification DKPCOFGS DKPCOFGS Domain Bacteria - Kingdom Eubacteria Domain Bacteria - Kingdom Eubacteria Domain Archae - Kingdom Archaebacteria Domain Archae - Kingdom Archaebacteria Domain Eukarya - Kingdom Animal, Plant, Protist, Fungi Domain Eukarya - Kingdom Animal, Plant, Protist, Fungi

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5 Classification What is the name of this animal? What is the name of this animal? Puma Puma Cougar Cougar Mountain Lion Mountain Lion Panther Panther

6 Adaptation?

7 Eubacteria Live everywhere Live everywhere cell walls contain - peptidoglycan cell walls contain - peptidoglycan Ex. E. coli Ex. E. coli

8 Archaebacteria Cell walls lack peptidoglycan Cell walls lack peptidoglycan genes are similar to eukaryotes genes are similar to eukaryotes harsh environments harsh environments methanogens - mud, animal digestive tracts methanogens - mud, animal digestive tracts halophiles - very salty environments, Great Salt Lake halophiles - very salty environments, Great Salt Lake thermophiles - hot springs thermophiles - hot springs

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13 Identification Shapes - bacilli, cocci, spirilla Shapes - bacilli, cocci, spirilla Cell Walls - gram positive, negative Cell Walls - gram positive, negative Movement - Movement - flagella flagella glide glide no movement no movement

14 Staphylococcus

15 Spirillum

16 Bacillus

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18 Obtaining Energy Autotrophs Autotrophs photoautotrophs - cyanobacteria (everywhere) photoautotrophs - cyanobacteria (everywhere) chemoautotrophs - hydrothermal vents, energy from chemical reactions chemoautotrophs - hydrothermal vents, energy from chemical reactions Heterotrophs Heterotrophs Photoheterotrophs - Photoheterotrophs - sun = energy sun = energy organic compounds = nutrition organic compounds = nutrition

19 Energy Release Obligate Aerobes - require oxygen Obligate Aerobes - require oxygen Obligate Anaerobes - oxygen deadly Obligate Anaerobes - oxygen deadly botulinum - causes botulism in unsterile cans, bulging cans botulinum - causes botulism in unsterile cans, bulging cans Facultative anaerobes - with or without oxygen Facultative anaerobes - with or without oxygen switch between respiration and fermentation, abundant switch between respiration and fermentation, abundant

20 Growth and Reproduction Some can divide every 20 min. Some can divide every 20 min. Binary fission - asexual reproduction Binary fission - asexual reproduction 2X normal size, DNA divides and cell division 2X normal size, DNA divides and cell division Conjugation Conjugation exchange of genes through a hollow bridge exchange of genes through a hollow bridge increases genetic diversity increases genetic diversity Endospores - proteins coats form in harsh conditions, up to centuries Endospores - proteins coats form in harsh conditions, up to centuries

21 BINARY FISSION

22 CONJUGATION

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24 Bacteria in Nature Producers Producers Decomposers Decomposers Nitrogen Fixation Nitrogen Fixation Rhizobium – symbiosis with soybeans Rhizobium – symbiosis with soybeans Nitrogen Ammonia Nitrogen Ammonia

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26 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 DiseasePathogenPrevention Bacteria and Disease Damage tissue by using it for food Release toxins Antibiotics

27 Human Uses of Bacteria

28 Oil Eaters Oil Eaters Sewage Treatment Sewage Treatment Drug Manufacturers Drug Manufacturers Genetic engineering Genetic engineering

29 Controlling Bacteria Sterilization Heat or chemicals Cooking Refrigeration

30 Quiz 1 1. Compare AND contrast the Domains Bacteria and Archaea. 2. I.D. the 3 shapes of bacteria and give the names. 1. Compare AND contrast the Domains Bacteria and Archaea. 2. I.D. the 3 shapes of bacteria and give the names. 3. Explain a min. of 2 types of bacteria movement methods. 3. Explain a min. of 2 types of bacteria movement methods. 4.Explain the 2 types of autotrophs. 4.Explain the 2 types of autotrophs. BONUS: Explain the purpose of Pili BONUS: Explain the purpose of Pili


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