SC-100

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SC-100

• Class 21
• Organization of Living Organisms

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Characteristics of Life

• Use energy
• Chemical reactions within cells
• Reproduce
• Regulate energy and respond to environment
• Share genetic code
• Descend from a common ancestor

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Classifying Living ThingsLinnaean Scheme

• Species (smallest)
• Genus
• Family
• Order
• Class
• Phylum
• Kingdom (largest)

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Species

• Species is a population of similar organisms who
  produce fertile offspring.
• Binomial name genusspecies
• Homo sapiens
• How many species?
• Best guess several million

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Kingdoms

• Monera Single-celled organisms lacking a cell
  nucleus.
• Protista Single celled organisms with a cell
  nucleus.
• Fungi Multi-cellular organisms that dissolve
  dead organisms and absorb the nutrients
• Plants Multi-cellular organisms that get energy
  directl from Sun by photosynthesis
• Animals Multi-cellular organisms that get their
  energy and nutrients by eating other organisms.

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Terms

• Prokaryote cell
• Has No Nucleus -- Monera Kingdom
• Eukaryote cell
• Has Nucleus -- All other Kingdoms

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Terms

• Autotroph An organism capable of synthesizing
  its own food from inorganic substances, using
  light or chemical energy. Green plants, algae,
  and certain bacteria are autotrophs.
• Heterotroph An organism that cannot synthesize
  its own food and is dependent on complex organic
  substances for nutrition.

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Our Classification

• -Kingdom Animalia
• -Phylum Chordata
• -Class Mammalia
• -Order Primates
• -Family Hominidae
• -Genus Homo
• -Species Homo sapiens

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