Bacteria - PowerPoint PPT Presentation

issac
bacteria l.
Skip this Video
Loading SlideShow in 5 Seconds..
Bacteria PowerPoint Presentation
play fullscreen
1 / 12
Download Presentation
Bacteria
284 Views
Download Presentation

Bacteria

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Bacteria Previously all classifiedKINGDOM MONERA

  2. Bacteria Characteristics • Prokaryotic • Unicellular • Some autotrophic • Some heterotrophic • Some chemotrophic • Contain Cell Walls

  3. Two Kingdoms of Bacteria • Archeabacteria • Most primitive organisms on earth • Found in very harsh environments • Eubacteria • “True Bacteria” • Disease causing bacteria in this group

  4. Evolutionary Importance of Bacteria • The oldest fossil evidence on earth is that of Archaebacteria • Archaebacteria are believed to be the ancestors of both Eubacteria and the other eukaryotic kingdoms

  5. The Classification of Bacteria • Classification is based on shape and arrangement of individual cells

  6. Coccus (Cocci) • Spherical Shaped bacteria

  7. Bacillus (Bacilli) • Rod Shaped Bacteria

  8. Spirillum (Spirilla) • Spiral Shaped Bacteria

  9. Bacterial Arrangements • “Diplo-”--pair of cells • “Strepto”--Chain of cells • “Staphylo”—Cluster of cells

  10. Draw the following bacterial shapes and arrangements • Diplospirillum • Streptobacillus • Staphylococcus

  11. Positive contributions of bacteria • Decomposers • “Fix” nitrogen into a useable form • Food production—yogurt, cheese, etc. • Sewage Treatment • Clean Oil Spills • Source of antibiotics

  12. Negative affects of Monerans • Disease • Syphilis, gonorrhea, tuberculosis, strep throat, botulism, etc. • Food Spoilage