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UNIFYING THEMES OF BIOLOGY

UNIFYING THEMES OF BIOLOGY. There is UNITY in the DIVERSITY OF LIFE. There are FEATURES that all LIVING THINGS HAVE IN COMMON. FEATURES that all LIVING THINGS HAVE IN COMMON. GENETIC CODE (genome) Governs the use of heredity information

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UNIFYING THEMES OF BIOLOGY

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  1. UNIFYING THEMES OF BIOLOGY

  2. There is UNITY in the DIVERSITY OF LIFE • There are FEATURES that all LIVING THINGS HAVE IN COMMON.

  3. FEATURES that all LIVING THINGS HAVE IN COMMON • GENETIC CODE (genome) • Governs the use of heredity information • PRESENCE OF ORGANELLES that carry out cellular activities • SHARE GENES • Phylogenetic tree ‘tree of life”

  4. Phylogenetic tree • Living things have descended from a single ancestor • THREE MAIN BRANCHES • DOMAINS • Domain Eukarya • Domain Archaea • Domain Eubacteria

  5. DOMAIN • Divided into 6 kingdoms • Domain Eukarya • Kingdom Animalia • Kingdom Plantae • Kingdom Fungi • Kingdom Protista

  6. DOMAIN • Divided into 6 kingdoms • Domain Archaea • Kingdom Archaea • (Kingdom Archaebacteria)

  7. DOMAIN • Divided into 6 kingdoms • Domain Bacteria • Kingdom Bacteria • (Kingdom Eubacteria)

  8. There is INTERDEPENDENCE OF ORGANISMS • Organisms interact with each other in the living world.

  9. INTERDEPENDENCE OF ORGANISMS • ECOLOGY • Study of interactions of organisms with the environment • ECOSYSTEM • environmental communities • BIOTIC living things in the environment • ABIOTIC • nonliving things in the environment

  10. INTERDEPENDENCE OF ORGANISMS • ECOSYSTEM • Communities interacting with abiotic factors • COMMUNITY • Differing groups (POPULATIONS)of living organisms living in the same area

  11. INTERDEPENDENCE OF ORGANISMS • BIOSPHERE • Thin layer of life around the Earth • 8 km above Earth’s surface • 8 km below Earth’s surface

  12. INTERDEPENDENCE OF ORGANISMS • AUTOTROPH PRODUCERS • Auto---self troph --- energy • Capable of converting their own energy • PHOTOSYNTHESIS plants • Photo--- light synthesis -- to make • CHEMOSYNTHESIS bacteria • Chemo– chemical synthesis -- to make

  13. INTERDEPENDENCE OF ORGANISMS • HETEROTROPH • Hetero – different troph– energy • Cannot convert its own energy from the sun directly • Must eat autotrophs to obtain energy • CONSUMERS --- PREDATORS

  14. EVOLUTION • CHANGE OVER TIME • Charles Darwin • DESCENT WITH MODIFICATION • Inherited traits within a population change over generations

  15. EVOLUTION • NATURAL SELECTION • Favorable traits are passed on • COMPETITION • SURVIVAL OF THE FITTEST • PREDATOR / PREY • ADAPTATION • Traits that improve survival

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