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What Does it Mean to Be Alive?

What Does it Mean to Be Alive?. What Are The Characteristics of Life?. Exploring LIFE. Biology – The study of Life What does it mean to be ALIVE? How do you know if something is ALIVE?. Is Fire ALIVE?. Characteristics of Life!.

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What Does it Mean to Be Alive?

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  1. What Does it Mean to Be Alive? What Are The Characteristics of Life?

  2. Exploring LIFE • Biology – The study of Life • What does it mean to be ALIVE? • How do you know if something is ALIVE?

  3. Is Fire ALIVE?

  4. Characteristics of Life! All living things share some basic properties  Seven Characteristics of Life • E Energy • R  Respond to Stimuli • G  Grow & Develop • R  Reproduction • C  Composed of cells • H  Homeostasis

  5. Energy: All living organisms obtain & use energy to grow, develop, repair damage, and reproduce

  6. 1. PRODUCERS: - Plants and other photosynthetic organisms - Produce their own food (from CO2, H2O, & the sun) upon which the entire ecosystem depends 2. CONSUMERS: - Animals: Obtain nutrients and energy from consuming the food made by producers Living Organisms

  7. All Living Things Respond to Their Environment Example: A plant’s leaves and stems grow toward light • Organisms react to stimuli: • Light • Temperature • Odor • Sound • Gravity • Heat • Water • Pressure

  8. Growth & Development ALL ORGANISMS GROW & DEVELOP

  9. All Living Things Grow Growth means to get bigger in size

  10. All Living Things Develop Development involves a change in the physical form or physiological make-up of an organism

  11. All Living Things Reproduce Reproduction is the process of producing new organisms of the same type Asexual Reproduction • A single parent organism reproducing by itself

  12. Sexual Reproduction • Two different parent organisms contribute genetic information • Involves the combination of male and female sex cells

  13. Cellular Organization • Living organisms • Consist of organic molecules  organized to form cells • Cells  Life’s basic units of structure and function • Composed of one or more cells

  14. All Living Things are Made Up of Cells Smallest unit capable of all life functions Unicellular Organisms • Entire organism is made up of one single cell • Bacteria and protists

  15. Multicellular Organisms • The organism is made up of many cells • Cells have specialized functions within the organism

  16. All Organisms Maintain Homeostasis A stable state of conditions in the body that are necessary for life • Body temperature • Blood volume • pH balance • Water balance

  17. Homeostasis: Ability of an organism to maintain relatively constant internal conditions * Example: Temperature regulation in the human body All organ systems contribute to homeostasis Living Organisms are Homeostatic

  18. Characteristics of Life! All living things share 7 basic properties  Seven Characteristics of Life • E Energy • R  Respond to Stimuli • G  Grow & Develop • R  Reproduction • C  Composed of cells • H  Homeostasis • * Discla

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