1 / 15

Kingdom Eubacteria

Kingdom Eubacteria. Characteristics of Monerans 1. Kingdom Eubacteria(monerans) 2. No organelles 3. Can be different shapes: a. coccus: round b. bacillus: rod shaped c. spirillum: spiral . 4. Arrangements:

egil
Télécharger la présentation

Kingdom Eubacteria

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Kingdom Eubacteria

  2. Characteristics of Monerans 1. Kingdom Eubacteria(monerans) 2. No organelles 3. Can be different shapes: a. coccus: round b. bacillus: rod shaped c. spirillum: spiral

  3. 4. Arrangements: a. diplo: pairs b. staphylo: clusters c. strepto: long chains 5. Transmitted through air, water, human contact, contaminated foods.

  4. Types of Bacterial Metabolism 1. Feeding requirements a. some are heterotrophs: live as parasites b. some feed on dead matter: saprobes c. some are photosynthetic: autotrophs 2. Oxygen requirements a. obligate aerobes: require oxygen to live. Example- E. coli lives in mammal intestines

  5. b. obligate anaerobes: killed in the presence of oxygen Example: syphilis c. facultative aerobe: can live with or without oxygen

  6. Adaptations for survival • Endospores a. hard outer covering produced during harsh environments. • b. resistant to drying out, and boiling • c. metabolism slows down, resumes growing when conditions are more favorable.

  7. 2. Toxin production a. poisons produced when endospore begins to grow b. some are deadly Examples: botulism, tetanus

  8. Ribosome Cell wall Cell membrane Peptidoglycan Pili Flagellum DNA The Structure of a Eubacterium Section 19-1 Go to Section:

  9. Types of Bacterial Reproduction1. Binary Fission a. reproduce asexually by splitting in half after copying genetic material

  10. b. Reproduce quicklyc. Stop reproducing only if they run out of food, dry up, poisoned by wastes 4. Conjugation a. sexual reproduction transferring all or part of DNA b. transfer occurs from one bacteria to another through a projection called a pili

  11. What does the doctor give you when you get a bacterial infection?

  12. Antibiotic production: a. antibiotics kill bacteria only

  13. What else can they be used for? • Food flavorings-buttermilk, yogurt • Adding nitrogen to the soil-nitrogen fixation

  14. How have bacteria evolved? AKA Biological resistance • How do bacteria become resistant to antibiotics? • Many people think that antibiotic resistance is only a problem for people who abuse antibiotic prescriptions, but it's not true. When people don't take antibiotics properly, the health of the entire public is at risk. Even if you haven't taken antibiotics for a long time, an infection caused by resistant bacteria may be more difficult to treat. • When exposed to an antibiotic, bacteria generally have two options - • Mutation - the bacteria change their structure; the antibiotic can no longer permeate the bacteria or bind to the cell surface • Acquire new genes - the bacteria acquire enzymes that de-activate or even destroy the antibiotic • As a result, instead of wiping out the infection altogether, the antibiotic kills only the weaker, non-resistant organisms and leaves their tougher counterparts to multiply and spread the genes that ensured their survival to begin with. Resistance develops over time as new generations of bacteria become stronger - a problem only made worse by the abuse, misuse and overuse of antibiotics.

  15. Common Diseases Caused by Bacteria Section 19-2 Disease Pathogen Prevention Regular dental hygiene Protection from tick bites Current tetanus vaccination Vaccination Proper food-handling practices Maintaining good health Clean water supplies 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 Go to Section:

More Related