1. Bacteria Text (460-468) LAB (instructions in binder) cheese VIDEO Bacteria Part I (worksheet in binder) VIDEO Bacteria Part II (worksheet in binder) Guided Notes in binder

2. Vocabulary endospore, antibiotic, anaerobic, toxin, capsule, pili

3. The study of bacteria Bacteriology KINGDOM formerly Monera Now 2 Domains Archeabacteria, Eubacteria (more about these later in the year) Only Prokaryotic cells Only Prokaryotic Domains

4. Characteristics of Prokaryotic Cells –Originated 3.5 bybp –No nucleus –Loop of DNA –Few organelles –No compartments –Very small 1-2µm (microns 1/1000 of a millimeter) 1/1,000,000 of a meter Eukaryotic Cells –Evolved 1.5 bybp –Nucleus- holds the DNA –Many organelles Mitochondria Chloroplast Golgi body Endoplasmic reticulum cytoskeleton

5. I.ANATOMY Draw and label cell with the following structures: pili flagella cell membrane cell wall capsule plasmid, cytoplasm

7. II Common Bacterial SHAPES

8. Coccus - sphere shaped Strepto- linear Staphylo- sheet

9. Bacillus - rod shaped PSEUDOMONAS AERUGINOSA BACILLUS ANTRACIS

10. Spirillum- spiral shaped Spirillum sp.

11. Do not write this! There are many ways to classify bacteria The choice depends on what you are interested in studying –Anatomy? –Physiology? –Harm to humans? –Food source?

12. Archaebacteria- Methanogens –methane producing, found in the gut of animals and swamps Extremehalophiles – salt loving, Dead Sea Thermoacidophiles – hot springs and geysers with acidic water

13. Eubacteria Recycle nutrients into the soil(break down large molecules “proteins, lipids, carbohydrates”, into simple molecules that can be absorbed by plants) Cyanobacteria also called blue green algae, photosynthetic bacteria

14. III. CLASSIFICATION by how they obtain energy Photosynthetic- energy from sunlight –Green sulfur bacteria, cyanobacteria, purple sulfur bacteria Chemoautotrophic- energy from electrons in inorganic molecules –Nitrobacter, nitrosomonas Heterotrophic- organic materials from other organisms –Streptomyces, rhizobium WRITE THIS ON THE BACK OF YOUR BACTERIA DRAWING

15. IV METABOLISM Obligate anaerobes- must live where there is no oxygen Obligate aerobes- must live where there is oxygen Facultative aerobe or facultative anaerobes- can live in either but prefers one.

16. V DISEASES Clostridium tetani tetanus, produces a toxin ( caused by deep puncture)

17. Clostridium tetani

18. C. botulinum botulism, food poisoning (caused by poor canning) Toxin is odorless and tasteless.

19. Clostridium botulinum

20. Borrelia burgdorferi- Lyme disease (carried by deer ticks) Named for Lyme County Conn.?

21. Borrelia burgdorferi Lyme Disease

22. Salmonella sp. Food poisoning (associated with eggs and poultry) Many different species

23. Salmonella sp.

24. Yersinia pestis- bubonic plague Black Death changed the course of history Thought to be carried by rats but actually carried by fleas

25. Yersinia pestis Bubonic Plague (Black Death)

26. Mycobacterium tuberculosum- tuberculosis (infects the lungs) Now there are some drug resistant strains.

27. Mycobacterium tuberculosum

28. USES Lactobacillus sp. Yogurt,sauerkraut pickles, vinegar Actinomycetes- antibiotics streptomycin »Chemicals that kill other prokaryotic cells

29. E. coli- in digestive tracts of humans, used in the manufacture of linen from flax (plant) –Excess, wrong location, or wrong species can be dangerous to humans.

30. Rhizobium sp. Associated with the roots of legumes (pod plants) Helps "fix" atmospheric nitrogen into the plants to help make proteins. Enriches soil, plants are high in protein. Tanning leather, silage (fermented hay increases protein content) “silo”

31. VII ENVIRONMENTAL FACTORS THAT INFLUENCE GROWTH Temperature up or down light Oxygen present amount of wastes Food availability presence of chemicals (salt) Amount of water

32. COMPETITION (secrete toxins) Endotoxins- part of the cell wall is poisonous Exotoxin- chemicals poison is released

33. VIII LEVELS OF CLEANING RefrigerationSLOWS GROWTH Antiseptic PREVENTS GROWTH DisinfectantDEATH OF PATHOGENS IN A MEDIUM SterileREMOVES ALL FORMS OF LIFE PasteurizationDESTRUCTION BY HEAT OF DISEASE CAUSING ORGANISMS FROM BEVERAGES

34. IX METHODS OF CLEANING MECHANICAL CHEMICAL RADIATION TEMPERATURE AND PRESSURE (AUTOCLAVE) ENDOSPORE – protoplasm of bacteria cell becomes encased in a spore coat. Protects from environment -250 C to over 100 C

35. X FOOD SPOILAGE AND PRESERVATION CANNING SALT CURING DEHYDRATION QUICK FREEZING RADIATION VACCUM PACKAGING CHEMICAL PRESERVATION

36. Test Topics FOR Tuesday Video Bacteria I and II worksheets Lab results (cheese, bacteria cultures) Notes on Anatomy, classification, diseases, uses, preservation of food and cleaning Text (460-468) Vocabulary 16-21 Bacteria word search

37. NOTEBOOK CONTENTS Due Tuesday (next test day) Cover Sheet Assignment Sheet Grade Sheet Vocabulary 1-21 Notes Labs –Microscopy –Biome Research –Bioethics –Cheese Making –Bacteria Cultures Daily Work –Text Ques pg. 9 + 22 –Analyzing sci words –Branches of Biology –Chap 12.1 –Chap 12.2 –IV and DV worksheet –Biome Measuring –Bacteria Video Part I –Bacteria Video Part II –Bacteria Word Search Systems

38. Difficult - Answers 1.Protoplasm of bacterial cell becomes encased in a spore coat…very hard to kill…you have to autoclave to kill 2.Look at Slide # 5 of this presentation 3.Random mutations that occur 4.Penicillin…Alexander Fleming…penicillin comes from a mold or fungus 5.It is their specific waste product 6.There are different strains of E.coli and they all are different. In some strains, they are okay for the body…in some strains…they can harm the body. 7.It destroys microbes by heat…in things like milk, juices, wines, and malt beverages. Louis Pasteur