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Warm-up

Warm-up. What makes something alive? . Six Characteristics of Living Things. All living things are composed of cells . Complex organization patterns are found in all living organisms. All organisms use energy .

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Warm-up

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  1. Warm-up • What makes something alive?

  2. Six Characteristics of Living Things • All living things are composed of cells. • Complex organization patterns are found in all living organisms. • All organisms use energy. • All organisms have stable internal conditions which must be maintained in order to remain alive. • All organisms grow and change. • All organisms reproduce in order to continue the species’ life.

  3. 1. All Living Things are Composed of Cells Eukaryotic Cell Two types of cells: • Prokaryotic Cells Most are single- celled organisms • Eukaryotic Cells Prokaryotic Cell Back to Menu

  4. 2. Complex Organization Patterns • Atomic Level • Molecular Level • Organelle Level • Cellular Level • Tissue Level • Organ Level

  5. 2. Complex Organization Patterns • Organism Level • Population Level • Group of same species • Community Level • Groups of different species • Ecosystem Level • Living and non-living elements • Biosphere Level Back to Menu

  6. 3. All Organisms use Energy Sunlight Which level of organization is represented here? Ecosystem Producers (plants and other photosynthetic organisms) Heat Chemical Energy Consumers (including animals) Heat

  7. 3. All Organisms use Energy • Metabolism: All of the chemical reactions that occur within an organism. • Catabolism: Breaks larger molecules down into smaller molecules to produce energy (i.e., Cellular Respiration) • Anabolism: Uses energy released by catabolic pathways to create cellular components (i.e., Photosynthesis) Back to Menu

  8. 4. All organisms have stable internal conditions which must be maintained in order to remain alive. This is called homeostasis. Brrr…. Shiver… I am so cold! Acceptable Range 37⁰C Back to Menu

  9. 5. All organisms grow and change. • Changes occur during the life cycle of an organism. • Some changes are inherited, which over time are called __________. adaptations

  10. 5a. Changes occur during an organism’s lifetime cvcvcc • Differentiation: The process by which cells become increasingly different and specialized cvcvcc

  11. 5b. Organisms Adapt Back to Menu • The inheritance of adaptations over time is evolution.

  12. 6. All organisms reproduce • Some organisms reproduce sexually. • Some organisms reproduce ________. asexually Back to Menu

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