bacteria and viruses chapter 19. classification kingdom…moneran domain a) euchaea b) bacteria
TRANSCRIPT
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Bacteria and Viruses
Chapter 19
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Classification
Kingdom…Moneran Domaina) Euchaeab) Bacteria
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Classification Characteristics
What characteristics do you know so far????
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Characteristics
Prokaryote Found anywhere
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Classification
Round coccus Rod bacillus Corkscrew spirillum
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Pathogenic Bacteria
What is a pathogen? Only 20% bacteria cause disease
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Strep Throat
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MRSA
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Staph Infection
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STD Syphilis
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Tetnus
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80% of bacteria are friendly
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Intestinal (mutualism)
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Decomposers
Nitrogen Fixing Bacteria
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Bacterial Structure
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Bacteria Have Only 1 Chromosome
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How Do We Slow Down Bacteria From Spoiling In Our Foods??????
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What Is Meant By The Term “sterilization”??
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Why Do We Get A Fever When We Have An Infection?
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How Do Scientists Use Bacteria For Society?????
Genetic Engineering Cleaning up oil spills Mine minerals from the ground Food production Making of chemicals Making medicines
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What Do You Know About Viruses?
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Do You Know????
What is the basic unit of all life?
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Main parts of the cell?
Cell membrane Nucleus DNA Cytoplasm
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Did You Know?????
A virus is many times smaller than one bacterial cell
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BUT…………….
A virus is not a cell
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Did You Know???
Viruses come in a variety of shapes
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Viral Shapes
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HIV Virus
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Measles
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Small Pox
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West Nile
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Viruses can also attack
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Bacteriophage
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Virus That Attacks Tobacco
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Remember the movie “OUTBREAK”?
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Basic Structure of a Virus
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Basic Viral Structure
A protein coat A DNA or RNA core Structures that are used to attach
to the host cell There is no cell membrane nor
cytoplasm
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A virus must invade a host cell to replicate
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HIV coming out of a white blood cell
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I call this virus “the sleeper”
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When cell divides, the viral gene also is replicated
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Retrovirus
A virus that contains RNA instead of DNA
Can cause some human and animal cancers
Also is the cause of AIDS
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What About Our Pets???
Dog/Cat Distemper Virus Dog/cat West Nile Virus Dog/Cat Avian Flu
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Can Viruses Attack Plants ??
Yes
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How Can A Viral Infection Be Prevented??
Vaccines Vaccines were given to the birds at
the Zoo to prevent West Nile and Avian Virus
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What is in a vaccine?
Weaken or dead parts of a virus The immune system does not
know any better and will build the antibodies to fight the virus
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Two Ways We Can Become Immune To a Viral Infection
Active Immunity contracting the disease Passive Immunity vaccines breast milk