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Bacteria. VERY SMALL Tip of sewing needle covered in bacteria.

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Presentation on theme: "Bacteria. VERY SMALL Tip of sewing needle covered in bacteria."— Presentation transcript:

1 Bacteria

2

3 VERY SMALL Tip of sewing needle covered in bacteria

4 Bacteria Found everywhere there is water Plaque on tooth with toothbrush bristles 

5 Diversity of Prokaryotes Bacteria are prokaryotes Prokaryotes make up two domains –Bacteria (eubacteria) –Archaea (archaebacteria). Staphylococcus bacteria on hair follicle

6 Archeabacteria “ancient” bacteria Unique cell walls and ribosomes most live in harsh environments Salty shallow tide pools Deep sea ventsHot springs

7 Eubacteria "true" bacteria largest kingdom have cell wall, some with flagella many live in soil or water some cause disease, decomposition some are photosynthetic Salmonella invading human cells

8 Photosynthetic Eubacteria Cyanobacteria (blue green algea)

9 Structure E. coli

10 Identifying Prokaryotes Spherical shape = Cocci

11 Identifying Prokaryotes Rod-shaped = Bacilli

12 Identifying Prokaryotes Spiral shape = Spirochetes http://www.youtube.com/watch?v=i7BV4IOVKyg&feature=related

13 Cell Walls

14 Gram Negative Gram Positive

15 Movement Flagella help prokaryotes to move toward materials that they need to survive.

16 http://www.youtube.com/watch?v=J6akNYlke hY&feature=related bacteria re-cap http://www.youtube.com/watch?v=J6akNYlke hY&feature=related http://www.youtube.com/watch?v=tqOVYpkZ 0qs bacteria song http://www.youtube.com/watch?v=tqOVYpkZ 0qs http://www.youtube.com/watch?v=JnlULOjUh SQ&feature=related white blood cell chase http://www.youtube.com/watch?v=JnlULOjUh SQ&feature=related

17 Diplo: in pairs (diplococcus) Diplococcus pneumoniae Arrangement

18 Diplo: in pairs (diplococcus) Bacillus anthracis Arrangement

19 Strepto: in long chains Streptococcus pyogenes Arrangement

20 Staphylo - in clusters Staphylococcus aureus Arrangement

21 Autotrophs – self-feeders Photosynthetic – Light energy Chemosynthetic – obtain energy from hydrogen gas, hydrogen sulfide, or ammonia Metabolism of Prokaryotes

22 Heterotrophs “Feed off of others” Saprophytes – Feeds off dead things (decomposers) Parasites – Feed off living things (cause disease)

23 Heterotrophs Leprosy

24 WHAT?!?! Clostridium botulinum “Botulism”

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26 Aerobes – require oxygen Anaerobes – Don’t need oxygen Respiration Tetanus Flesh eating bacteria

27 Reproduction and Growth Under optimum conditions – divide ever 20 minutes Binary Fission – Asexual reproduction – Simple Cell Division

28 Conjugation Two cells exchange DNA through a protein bridge E. coli Recipient Donor

29 Endospores Dormant state that helps bacteria survive unfavorable conditions Clostridium botulinum

30 Importance of Bacteria Benefits to humans – Food Processing – dairy products (cheese, cream cheese, yogurt, etc.) – pickles, sauerkraut, vinegar

31 Sewage Treatment Plant Bacteria break down waste

32 Sewage Treatment Plant Bacteria break down waste

33 Medicine Used to make antibiotics, insulin, other products Inhibition of fungal growth Bacillus colony


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