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Characteristics of Life

Characteristics of Life. Is it ALIVE?. M etabolism. All orgs… Take in E nergy for nourishment Convert E to useable forms Expel E in waste. R eproduction. Method to keep species alive Asexual & Sexual. R espond to S timulus.

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Characteristics of Life

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  1. Characteristics of Life Is it ALIVE?

  2. Metabolism • All orgs… • Take in Energy for nourishment • Convert E to useable forms • Expel E in waste

  3. Reproduction Method to keep species alive Asexual & Sexual

  4. Respond to Stimulus • Orgs must respond to internal and external stimuli

  5. Evolution • Populations of orgs change their genetic make-up over many generations and adapt to surroundings

  6. Development • Egg to mature adult

  7. Cells • Prokaryotic cells do not have a membrane bound nucleus, eukaryotic cells do.

  8. Cells Plant cells have cell walls, animal cells don’t

  9. Homeostasis • Orgs must regulate their internal environment

  10. Energy Autotrophs Heterotrophs

  11. Growth • All orgs grow in size

  12. MRS ED CHEG • Metabolism • Response to Stimulus • Reproduction • Energy • Development • Cells • Homeostasis • Evolution • Growth

  13. Levels of Organization Atom: Oxygen

  14. Levels of Organization Molecule: DNA

  15. Levels of Organization Organelle: Nucleus Tissue: Ciliated Epithelial Tissue Cell: Goblet Cell

  16. Levels of Organization Organ: Trachea Organ System: Respiratory

  17. Levels of Organization Organism: Sheep Community Different species interacting in a common environment Population: Group of org’s of one species Ecosystem A community and its interactions with the non-living environment

  18. What is the purpose of reproduction? • What are 2 types of reproduction? • Define Evolution • Give an example of something that has evolved. • What is the difference between growth & development? • Give an example of how a person can develop and grow. • Define homeostasis. • Give two example of homeostasis.

  19. Give examples of the levels of organization from atom to organism. • Define metabolism. • Explain how metabolism is related to energy and development. • Explain how responding to stimuli can help an organism. • What is one thing that is different between plant and animal cells? • What is the difference between a eukaryotic and prokaryotic cell?

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