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September 17, 2013

September 17, 2013. Pre- AP Correct Who’s Who? Yeast Lab. Freshwater Food Web. September 17, 2013. Periods 3 & 4 Make sure you have copied the Freshwater Food Web into your journal. Using the food web, complete the Who’s Who sheet to turn in for a grade!! Copy 4 Defintions Game.

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September 17, 2013

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  1. September 17, 2013 • Pre- AP • Correct Who’s Who? • Yeast Lab

  2. Freshwater Food Web

  3. September 17, 2013 • Periods 3 & 4 • Make sure you have copied the Freshwater Food Web into your journal. • Using the food web, complete the Who’s Who sheet to turn in for a grade!! • Copy 4 Defintions • Game

  4. September 17 2013 • Period 5 • Copy the Organisms Graphic Organizer on the Board • In groups of 3-4 organize the Freshwater Organism cards into a food web. • In your journal draw the food web using arrows and the names of the organisms only. • Complete the Who’s Who Sheet to turn in for a grade!

  5. September 17, 2013 • Period 7 • Copy the Graphic Organizer on the Board • Study the Freshwater Food Web into your journal. • Complete the Who’s Who? Sheet to turn in for a grade. • Limiting Factors • If time permits: Limiting Factors Game

  6. BIOTIC • Living resources or components of an ecosystem

  7. ABIOTIC • Non –Living Resources or Components of an Ecosystem • Examples: Water, light, temperature, air, soil, rocks and wind

  8. LIMITING FACTOR • Those biotic and abiotic factors that limit the size of a population

  9. COMPETITION • All living things compete for • Food • Space • Competition limits population growth

  10. CARRYING CAPACITY • The total number of organisms supported in a habitat

  11. September 18, 2013 Pre-AP • In your journal, write a short summary of how food, water and land (shelter) are important components of a habitat. Glue in the graph information. • You will be assigned a number for a short game we will play. • You will graph the data from the game.

  12. September 18, 2013 • On your desk is a ½ piece of paper with some of the factors that were presented in the game played yesterday. • Decide if the factor limited population growth or allowed population growth. (Did you have to go backward or forward?) • Then decide if the factor was biotic or abiotic. • Check the correct boxes.

  13. Limiting FactorYEAST LAB • 10 cc Yeast • 10 cc Sugar • 50 mL Water at 40-50 degrees C • Spoon • Cup • Paper Towel

  14. Procedure • One person will get supplies • Set down paper towel on your desk. Place the yellow cup on top. • Observe the sugar, then pour into the cup. • Observe the yeast, then pour into cup. Stir. • Are there any changes? • Pour the water into the cup and stir gently. • Set the cup aside and wait.

  15. YEAST • Single Celled • Eukaryotic • Fungi • Used to expand in cooking

  16. ASEXUAL REPRODUCTION • Parent Cell • Budding • Identical / Uniform Offspring • No Survival Advantage

  17. ABIOTIC FACTORS • Temperature • Space

  18. POST LAB QUESTIONS – answer on handout • 1. What kind of change occurred when mixing the sugar and yeast? • 2. What abiotic factors affected the yeast? • 3. What kind of change occurred after adding water? • 4. Will the yeast continue to reproduce forever? Why or Why Not? • 5. What is an example where two different species might compete for resources? • 6. What did you learn about how yeast depends on and may compete for abiotic resources?

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