DISEASE CAUSING VIRUSES VIRUS STRUCTURE A virus is not made of cells It is nucleic acid (DNA or RNA)...
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Transcript of DISEASE CAUSING VIRUSES VIRUS STRUCTURE A virus is not made of cells It is nucleic acid (DNA or RNA)...
DISEASE CAUSING VIRUSES
VIRUS STRUCTURE
A virus is not made of cells
It is nucleic acid (DNA or RNA) surrounded by protein coat (Capsid)
VIRAL REPRODUCTION
•Virus can’t 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
BACTERIA VS VIRUSES
BACTERIA
•Made of cells
•Can be killed by antibiotics
•Examples of disease caused by bacteria is strep throat
VIRUS
•Not made of cells•MUCH SMALLER THAN CELLS•Can’t be killed by antibiotics•Example of diseases caused by viruses are AIDS (HIV), Smallpox, Influenza
INTERNAL AND EXTERNAL FACTORS IN DISEASE
IMMUNITY
PASSIVE VS. ACTIVE IMMUNITY
PASSIVE IMMUNITY
•Person does NOT make memory cells or antibodies•Antibodies only are transferred•Doesn’t provide long-term protection•Natural: from breastfeeding•Artificial: Rabies “shot”
ACTIVE IMMUNITY
•Person DOES make antibodies AND memory cells
•Provides long term immunity
•Natural: you have disease
•Artificial – you get a VACCINATION
BEHAVIORAL ADAPTATIONS
BEHAVIOR IS ANY THING AN ANIMAL DOES. ANIMAL BEHAVIORS ALSO HELP ANIMALS SURVIVE AND/OR REPRODUCE.
o Innate behavior is also called inborn behavior.
o It is programmed in DNA
o Innate behaviors include reflexes and instincts
o Exampleso human suckling.o spiders spinning webso Migration: birds flying
south for the wintero Hibernation – dormant
when coldo Estivation – dormant
when hot
LEARNED BEHAVIOR
SOCIAL BEHAVIOR