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Understanding Life: Determining Living Organisms through Key Characteristics

In the study of life forms and populations, a fundamental question arises: "Is this alive?" To answer this, we can explore five essential characteristics that define all living beings: 1) All life consists of cells, 2) Living organisms reproduce, 3) They grow and develop, 4) They require energy to function, and 5) They respond to environmental stimuli. By using a microscope and observing these traits, we can discern living entities from non-living matter. Understanding these characteristics is crucial for biology and our appreciation of life.

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Understanding Life: Determining Living Organisms through Key Characteristics

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  1. Life forms and populations Working with a microscope

  2. Is this alive?

  3. Is this alive?

  4. Is this alive?

  5. Is this alive?

  6. Is this alive?

  7. Is this alive?

  8. How do I know if it is alive?

  9. How do I know if it is alive? • There are five characteristics of all life forms:

  10. How do I know if it is alive? • There are five characteristics of all life forms: • All life contains cells.

  11. How do I know if it is alive? • There are five characteristics of all life forms: • All life contains cells. • Reproduce.

  12. How do I know if it is alive? • There are five characteristics of all life forms: • All life contains cells. • Reproduce. • Grow

  13. How do I know if it is alive? • There are five characteristics of all life forms: • All life contains cells. • Reproduce. • Grow • Need Energy

  14. How do I know if it is alive? • There are five characteristics of all life forms: • All life contains cells. • Reproduce. • Grow • Need Energy • Respond to stimuli

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