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WEEK 3: BIOLOGY

Brought to you by Research Organization Texas Academy of Math and Science University of North Texas. WEEK 3: BIOLOGY. WHAT IS BIOLOGY?. Includes you and me. What other living organisms are there ?. The study of life and living organisms !. IS THIS A LIVING ORGANISM?.

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WEEK 3: BIOLOGY

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  1. Brought to you by Research Organization Texas Academy of Math and Science University of North Texas WEEK 3: BIOLOGY

  2. WHAT IS BIOLOGY? • Includes you and me • What other living organisms are there? The study of life and living organisms!

  3. IS THIS A LIVING ORGANISM?

  4. IS THIS A LIVING ORGANISM? http://www.youtube.com/watch?v=7UkZHDIujUc

  5. IS THIS A LIVING ORGANISM? • http://youtu.be/Q3B3OnTVvmg?t=2m

  6. IS THIS A LIVING ORGANISM?

  7. IS THIS A LIVING ORGANISM? http://www.youtube.com/watch?v=veMvxMGHZzo

  8. IS THIS A LIVING ORGANISM?

  9. WHAT ARE SOME CHARACTERISTICS OF LIVING THINGS?

  10. SOME CHACTERISTICS • Composed of cells • They can grow • They can interact with their surroundings • They all use DNA

  11. EXPERIMENT TIME! • Problem: I want to actually see DNA, how can I do such a thing?

  12. HYPOTHESIS • What do you think?

  13. MATERIALS • Strawberries • Isopropyl Alcohol • Dish Soap • Salt • Ziploc bag • Coffee filters • Water • Measuring utensils • Beakers or containers • Tweezers • Spoons

  14. PROCEDURE • 1. Put a bottle of isopropyl alcohol in a freezer. We'll come back to it later. • 2. Measure 90 mL of water into a beaker or similar container. • 3. Pour 10 mL of dish soap into the 90 mL of water. • 4. Add 1/4 tsp of salt to the liquid in the beaker. • 5. Mix it all up and now you've got a homemade extraction solution (Lysis) • 6. Place one strawberry in a plastic zipper-lock bag. • 7. Pour your extraction solution into the bag with the strawberry. • 8. Remove as much air from the bag as possible and seal it.

  15. Procedure • 9. Use your hands to mash, smash, and mush the strawberry inside of the bag until there are no large pieces remaining. • 10. Pour the resulting strawberry and extraction solution mixture through a coffee filter and into a beaker or similar container. • 11. Use a spoon to press the strained bits of strawberry against the sieve, forcing even more of the solution into the beaker. • 12. From the container it is currently in, transfer the solution into a smaller beaker or similar container that holds around 50-100 mL of fluid. • 13. Add 5 mL of your chilled isopropyl alcohol to the solution and hold the mixture at eye level. • 14. Can you see how there is a separation of white "stuff" atop the rest of the solution? That's the DNA of the strawberry. • 15. Gently remove the DNA from the solution using tweezers.

  16. RESULTS

  17. CONCLUSION • ALL LIVING THINGS HAVE DNA!

  18. Future applications • There are many different methods that can be used to extract DNA • Human Genome Project • Human cheek cells • Other fruits • Any other living organism

  19. BIOLOGY CAREERS

  20. BIOLOGY CAREERS

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