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It’s ALIVE!!! Or, is it?

It’s ALIVE!!! Or, is it?. An Unger Power Point. All organisms have 6 characteristics. Cells Response to stimulus Reproduction DNA/”Life Molecule” Use Σ Grow & develop. Cell. Subunit of life Membrane-bound 2 types Prokaryote Eukaryote. Response to Stimulus. React to change

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It’s ALIVE!!! Or, is it?

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  1. It’s ALIVE!!! Or, is it? An Unger Power Point

  2. All organisms have 6 characteristics • Cells • Response to stimulus • Reproduction • DNA/”Life Molecule” • Use Σ • Grow & develop

  3. Cell • Subunit of life • Membrane-bound • 2 types • Prokaryote • Eukaryote

  4. Response to Stimulus • React to change • Maintain homeostatis

  5. Reproduction • Ability to produce offspring • Asexual Reproduction • ONE parent • Sexual Reproduction • TWO parents

  6. DNA/”Life Molecule” • DeoxyriboNucleic Acid • Passes on hereditary information

  7. Use Σ • Organisms take in and use energy • Metabolism • Sum of all chemical reactions • YOU are walking, talking, living, breathing CHEMICAL REACTIONS!

  8. Types of Σ

  9. Chemicals of life • Carbohydrates • Sugar/Σ • Lipids • Fat/storage for Σ • Proteins • Some Σ/ made of amino acids • Nucleic Acids • DNA & RNA

  10. One sentence to rule them all. • Nucleic acids provide the information to make proteins, which are then used to break down carbohydrates and lipids to release energy.

  11. Grow & Develop • Grow • Get bigger • Develop • Δ form

  12. Necessities of life • Food • Make it (producer/autotroph) • Get it (consumer/heterotroph) • OTHER (decomposer) • Water • Allows metabolism to take place • Air • CO2 and O2 • Shelter • Rest & security

  13. Proof of LIFE • Back in the day…spontaneous generation • 2 experiments prove LIFE from LIFE

  14. Redi…an Italian doc (1600’s) Fly babies only came from flies!!!!

  15. Pasteur…a Frenchman (1800’s) The air also let in bacteria. LIFE from LIFE!!!

  16. How life is organized…

  17. Classification • HOW we arrange/group organisms based on similarities • EIGHT levels • Domain • Kingdom • Phylum • Class • Order • Family • Genus • Species • Does King Philip Come Over For Green Soup?

  18. EUKARYOTE DOMAIN!!! What is missing?

  19. Taxonomy • THE Science of identifying & labeling/naming organisms • Carolus Linnaeus (Swedish botanist 1750s) • Binomial Nomenclature • 2 name system • Genus & Species • FIRST letter of Genus is CAPITAL • first letter of species is lowercase • BOTH are ALWAYS italicized or underlined

  20. Branching Diagrams/Cladogram What is missing? • Arrows point TO living organism • Characteristic/trait ALONG branch

  21. Classification of ALL Life! Unicellular, Prokaryotic, Auto & Heterotrophs Unicellular, Prokaryotic, Auto & Hetero Multi, Eukaryote, AUTO Multi, Eukaryote, HETERO Multicellular, Eukaryote, Decomposer

  22. Dichotomous Keys • A tool that helps its user identify natural objects. • Dichotomous means "divided into two parts.” • Each step has TWO choices

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