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Is It Alive?

Is It Alive?. Group 5 Hannah, Kevin, Emma. What Makes It Alive?. Everything that is alive shares certain common characteristics. Everything that is alive must… Adapt to changes in its environment Reproduce or pass on DNA in some way Convert energy Grow and change

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Is It Alive?

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  1. Is It Alive? Group 5 Hannah, Kevin, Emma

  2. What Makes It Alive? Everything that is alive shares certain common characteristics. Everything that is alive must… • Adapt to changes in its environment • Reproduce or pass on DNA in some way • Convert energy • Grow and change • Excrete waste, the most common being CO2.

  3. The “Mystery Object” • Here are some pictures of our “Mystery Object”:

  4. Questions We Posed • Does it have cells? • Does it convert energy? • How does it react to water? • How does it react to soil? • Does it excrete waste?

  5. Our Tests • One of our main experiments for testing if our “mystery object” was alive was to place it in several different environments and observe any reactions. We placed our object in… • Damp dirt • Dry dirt • Sugar water • Salt water • The sunlight And of course the control. We also observed our object under a microscope.

  6. Test Results • We had three days to observe our mystery object’s reactions to different environments. We placed our mystery object in the different environments and let it sit for three days. On the next slide we will present our findings. The Dependent Variables we measured were: • Water Level • Moisture Level • Soil Level • Color Change • Smell

  7. Days 1, 2, 3 • Salt Water: Mystery object is no longer visible. No other reaction evident. Water level the same. • Sugar Water: Mystery object is no longer visible. No other reaction evident. Water level the same. • Damp Soil: Some mystery object still visible. Moisture level the same. Soil amount the same. Some mystery object has disappeared. • Dry Soil: Most of the mystery object is still visible. The soil is still dry. No visible reaction. • Sunlight: All of the mystery object is still visible. No growth/change was visible. No energy conversion was visible. Temperature did not change. • Control (Water, no salt or sugar):Mystery object is no longer visible. No other reaction evident. Water level the same. There were no visible changes between any of the days.

  8. Explaining the Bromothymol Blue • We left our “mystery object” in Bromothymol Blue over the weekend. It did change colors slightly, however this was only because of the presence of PH Alkaline, which does not mean it is alive.

  9. Under The Microscope • Here are some pictures of our “Mystery Object” underneath the microscope: Under Red Magnification: (No cells are visible) Under Yellow Magnification: Under Blue Magnification:

  10. Our Conclusion • Because our “mystery object” did not appear to react to environment change, convert energy, have cells, reproduce, grow and change, or excrete waste under our observations, we have concluded that it is NOT alive.

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