1 / 25

BACTERIA

BACTERIA. Kingdoms: Eubacteria and Archaebacteria. Bacteria Characteristics. LIVING! PROKARYOTE!! No nucleus…no nuclear membrane Only ribosomes Simple CURED WITH ANTIBIOTICS!!!. Characteristics of Bacteria. Unicellular Prokaryotic No nucleus and have ribosomes

dian
Download Presentation

BACTERIA

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. BACTERIA Kingdoms: Eubacteria and Archaebacteria

  2. Bacteria Characteristics • LIVING! • PROKARYOTE!! • No nucleus…no nuclear membrane • Only ribosomes • Simple • CURED WITH ANTIBIOTICS!!!

  3. Characteristics of Bacteria • Unicellular • Prokaryotic • No nucleus and have ribosomes • Cell walls (with or without peptidoglycan) • Some autotroph or Some heterotrophic

  4. PICTURE

  5. Reproduction: Asexual • Binary fission-DNA is copied and cell divides • http://www.youtube.com/watch?v=gEwzDydciWc

  6. Reproduction: Sexual • Conjugation allows for a species to vary • Hollow structures, called pili, connect two bacteria, and DNA is exchanged, then the cells separate

  7. What is the result of conjugation? • GENETIC DIVERSITY! • It ensures that the bacteria will: • Survive in a difficult environment. • Reproduce and pass their genes to the next generation.

  8. Beneficial USES FOR BACTERIA • Aids in digestion (found in intestines) • Used to make yogurt, wine, sauerkraut • Produce antibiotics and medicines • Recycle nitrogen in the nitrogen cycle • Decompose dead organic material • Used in septic systems

  9. BACTERIAL DISEASES • Cavities • “Staph infections” • Food poisoning • Anthrax • Strep throat • Tuberculosis • Syphilis • Cholera • Ear infections • Toxic Shock Syndrome • Meningitis (bacterial) • Diphtheria • Bubonic plague (Black Death)

  10. Signs of Bacterial Infection: • Skin rashes and/or lesions • Swollen glands or tissues • Increased RBCs

  11. Cures and Preventions: • Cure:Antibiotics are medicines that are used to rid the bacteria in your body • Prevention: Heat, soap, good hygiene, cook food, refrigerate • http://www.youtube.com/watch?v=4lmwbBzClAc&safety_mode=true&persist_safety_mode=1&safe=active • Antibiotic Resistance: bacteria are not affected by antibiotic treatments. This is becoming a problem around the world. • http://www.youtube.com/watch?v=eRvfhljxA4s&feature=results_main&playnext=1&list=PL2AD832F5BA79A6DF

  12. VIRUSES 19.2

  13. VIRUSES Characteristics • NOT LIVING! • NOT A CELL!! • PREVENTED WITH A VACCINE not antibiotic!!!

  14. Characteristics • A core of nucleic acid (DNA or RNA) • A protein capsid coat • Incredibly small

  15. Compare the size of a Eukaryotic cell, Bacterial Cell and a Virus Viruses < bacteria cells<eukaryotic cells

  16. PICTURE Capsid- protein coat (part that holds the DNA or RNA) Legs (anchor the virus to the cell)

  17. HOW VIRUSES REPRODUCE • Virus HIJACKS a host cell • Virus injects DNA or RNA into cell • Viral DNA or RNA is replicated • Transcription and Translation takes place to make capsid (protein coat) • Cell assembles viruses • Cell is lysed/explodes, new viruses are released and infect other cells

  18. BENEFICIAL USES • Researchers study viruses to create better vaccines • Stocked in private non-disclosed labs around the world to possibly use as germ warfare against enemies

  19. Diseases • Measles • Mumps • Rubella • Polio • West Nile • Hepatitis A, B, C • Ebola • Small pox • Influenza (the flu) • HIV • Chicken pox; Shingles • Herpes • Common colds • Epstein Barr • HPV • Rabies

  20. Human Immunodeficiency Virus • HIV causes AIDS • HIV attacks Helper T-Cells, which are vital to our immune system • Since HIV decreases the immune system, a person is more prone to secondary infections than a normal person Mutates too quickly to make a vaccine

  21. InFLUenza • Symptoms: High fever, sore throat, fatigue, aches, coughs • Mutates regularly. That is why we have vaccines yearly • Can be air borne - When some one coughs or sneezes, you can contract the virus by breathing it in.

  22. Cure/Preventions • Can not be treated. • We treat the symptoms- aching, fever, nausea….etc • VACCINE-antibodies from the virus “bootcamp” for your immune system

  23. Quick Vocab Lesson • Pathogen – disease-causing agent (bacteria, virus, fungi) • Immune Response – the body’s reactions to any pathogen • Outbreak – rapid spreading of a certain disease • AKA: epidemic

More Related