the role of bacteria in infection
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The Role of Bacteria in Infection. M. Stafford. What is a Prokaryote?. Unicellular Lacks a nucleus Small 1-5 micrometers. Bacteria are Examples of Prokaryotic Cells. Two Kingdoms Eubacteria – found everywhere Archaebacteria – found in harsh environments. Shapes of Bacteria.

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Presentation Transcript
what is a prokaryote
What is a Prokaryote?
  • Unicellular
  • Lacks a nucleus
  • Small 1-5 micrometers
bacteria are examples of prokaryotic cells
Bacteria are Examples of Prokaryotic Cells
  • Two Kingdoms
  • Eubacteria – found everywhere
  • Archaebacteria – found in harsh environments
growth and reproduction
Growth and Reproduction
  • Binary Fission
  • Conjugation
  • Spore Formation - endospore
importance of bacteria
Importance of Bacteria
  • Producers
  • Decomposers
  • Many human uses

Soil bacteria

bacteria and disease
Bacteria and Disease
  • Some use cells for food
  • Example Mycobacterium causes tuberculosis
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Some release toxins
  • Example – Streptococcus
  • Releases a toxin that can cause a rash and scarlet fever
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Diphtheria – Corynebacterium diphtheria infects the throat and releases toxins into the bloodstream.
  • Destroys tissues can cause heart failure, paralysis and death
preventing bacterial disease
Preventing Bacterial Disease
  • Your first line of defense against bacterial infection is your skin
  • Wash your hands
preventing bacterial disease1
Preventing Bacterial Disease
  • Vaccine – a weakened or killed pathogen that is used to stimulate the body’s immune system
  • Antibiotic – blocks the growth and reproduction of bacteria
control of bacteria
Control of Bacteria
  • Sterilization by heat
  • Disinfectants
  • Food storage and processing
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