Disease causing viruses

1
Disease causing viruses

• VIRUS STRUCTURE

• Viral reproduction

• A virus is not made of cells
• It is nucleic acid (DNA or RNA) surrounded by
  protein coat (Capsid)

• Virus cant reproduce unless it is inside a
  living cell
• The virus uses the cells enzymes and ribosomes to
  make DNA and protein
• New viruses either bud off of the cell or the
  cell bursts, releasing lots of viruses

2
BACTERIA vs VIRUSES

• Bacteria

• Virus

• Made of cells
• Can be killed by antibiotics
• Examples of disease caused by bacteria is strep
  throat

• Not made of cells
• MUCH SMALLER THAN CELLS
• Cant be killed by antibiotics
• Example of diseases caused by viruses are AIDS
  (HIV), Smallpox, Influenza

3
Internal and external factors in disease
4
IMMUNITY
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PASSIVE vs. ACTIVE immunity

• ACTIVE IMMUNITY

• Passive immunity

• Person DOES make antibodies AND memory cells
• Provides long term immunity
• Natural you have disease
• Artificial you get a VACCINATION

• Person does NOT make memory cells or antibodies
• Antibodies only are transferred
• Doesnt provide long-term protection
• Natural from breastfeeding
• Artificial Rabies shot

6
Behavioral Adaptations

• Behavior is any thing an animal DOES. Animal
  behaviors also help animals survive and/or
  reproduce.

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Innate Behavior

• Innate behavior is also called inborn behavior.
• It is programmed in DNA
• Innate behaviors include reflexes and instincts
• Examples
• human suckling.
• spiders spinning webs
• Migration birds flying south for the winter
• Hibernation dormant when cold
• Estivation dormant when hot

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Learned Behavior
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Social behavior