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What Is Life?

FIRST FIVE!. What Is Life? . Darnell wants to see if flies like honey or vinegar more. He puts out two bowls: one of honey, one of vinegar. Then, he counts how many flies land on each bowl. What is a strong hypothesis Darnell could have made? What is the independent variable?

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What Is Life?

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  1. FIRST FIVE! What Is Life? • Darnell wants to see if flies like honey or vinegar more. He puts out two bowls: one of honey, one of vinegar. Then, he counts how many flies land on each bowl. • What is a strong hypothesis Darnell could have made? • What is the independent variable? • What is the dependent variable? • What is at least two variables that should stay constant? • Set up your new Points Sheet! • 15 minutes of SSR.

  2. Objectives • By the end of today, all SWBAT… • Differentiate between things that are living and not living

  3. Agenda • Catalyst • Hypothesis Review • IT IZZZ ALIVVVEEEEEE! …or is it? • Al Gore • Ok, so do I know what is alive? • EQ HOMEWORK!

  4. Hypothesis Review • Key Point Review: Scientists make hypotheses to answer questions they have about the world. • Educated = there’s a reason you guess what you guess. • Use the word “because” • Testable = there’s a way to prove it right or wrong.

  5. Why were lights put on the Crescent City Connection? If Nicki Minaj is on a track, will it sell more copies? What would happen if this little girl sneezed on me?

  6. To the left of the margin, label the column OBJECT Fold your paper in half Left half: Label it HYPOTHESIS BEFORE LESSON Right half: Label it AFTER LESSON Set-Up What is life? January 18 Hypothesis Before Lesson After Lesson Object

  7. Is it alive? • Each group will receive an object • Directions • Write down what your object is. • Question: Is the object ALIVE or NOT ALIVE? • Write a STRONG HYPOTHESIS in the Before Lesson column ONLY. • We will switch objects after 2 minutes.

  8. What is life? August 24 Hypothesis Before Lesson Object After Lesson This object is NOT alive because it does not breathe oxygen. PENCIL

  9. What Is Life? • How can you tell if something is alive? • How can you tell if something is not alive? • Think really hard about this. For example: clouds move… but are they alive?

  10. Is it alive? Directions Write down what your object is. Question: Is the object ALIVE or NOT ALIVE? Write a GOOD HYPOTHESIS in the Before Lesson column ONLY. We will switch objects after 2 minutes.

  11. Living or Non-living • Biology is the study of life. • Therefore, we need to decide exactly what things are living and what are not. • Organism: Living thing • All living things have ALL the characteristics of life. • MS. S! WHAT ARE THEY?!

  12. Glad you asked! • Key Point #1: There are six characteristics that all living organisms have in common • Metabolism • Reproduction • Growth • Organization • Response • Evolution If an organism is missing even ONE characteristic, it is NOT ALIVE.

  13. GOTTA HAVE ‘EM ALL! Metabolism Reproduction Growth Organization Response Evolution

  14. Metabolism • Metabolism: Process how living things gather and use ENERGY. • Metabolism turns food into energy. • All living organisms need food to do things (moving, building muscle, exercise, getting more food, rapping, dancing, shopping, etc.)

  15. Reproduction • All living things have the capacity to reproduce. • Reproduce = make more organisms like itself • Reproduction happens at all levels. • Human reproduction = have sex, make babies • Cellular reproduction = every cell inside your body ALSO makes baby cells

  16. Growth • All living things change as they get older. • Doesn’t necessary mean getting bigger, but that is usually what happens. • Examples • Humans start off as babies • Frogs start off as tadpoles • Pine trees start off as pine cones.

  17. Organization • All living things are highly organized. • We will start studying this in more detail tomorrow, when we begin to talk about the cell. • All of a human’s body parts are made up a certain way. A plant’s leaves and stem fit together in a predictable way. • Analogy • Bedrooms are highly organized. Has a bed, sheets, dresser. Doesn’t have a toilet. Without this organization, it wouldn’t be a bedroom!

  18. Response • All living things respond to their environment. • Whatever is going on around a living thing, the organism can change to deal with it. • Examples: • Animals move towards warmer places when it’s cold outside. • Plants grow their roots towards water. • Ms. S fusses when you don’t do your class work.

  19. Evolution • All living things have a universal genetic code (DNA) that determine characteristics about them • Example: how many arms you have • Over time, DNA can evolve, or change for the better.

  20. LIGHTNING PRACTICE ROUND!

  21. Where on your body are cells?

  22. Let’s go back • Take 7 minutes to go back over your work and fill in the “After Lesson” column. • Make sure to use MR. GORE, and EXPLAIN your answer. • Remember: for something to be alive, it has to display ALL of the characteristics of life.

  23. Exit Question • Explain why is everyone in this class living. • What does MR. GORE stand for? Explain what at least THREE of the letters stand for. HOMEWORK: Choose five living items. For each one, EXPLAIN how you know they are living. Choose two non-living items and explain how you know each is not living. EXTRA CREDIT HOMEWORK: Bring in one 100 pack of 3x5 index cards for +2 points on your unit test!

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