Hand in W'S' 4'1 and all Chapter 3 Corrections before the bell rings

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Class Topics
Title Biology 11/3/06
Objectives

• To assess learning about cells and their
  organelles and begin learning about movement of
  molecules across the cell membrane

• Hand in W.S. 4.1 and all Chapter 3 Corrections
  before the bell rings
• Review Chapter 3 Test
• Notes Chapter 4
• It is said Abraham Lincoln asked his cabinet "If
  you call a tail a leg, how many legs does a dog
  have?" To which the cabinet replied "Five."
  "No," said Abe, "calling a tail a leg doesn't
  make it one."

Tuesday, November 10, 2009 637 AM
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Miscellaneous

• Starting with W.S. 4.1 there will be no more
  corrections for at least a two week time period.
• Assignments due at the beginning of class should
  be handed in with 30 seconds of the bell ringing!
  
• They will be counted as late if not.

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Class Assignments
By When
What

• All Chapter 3 corrections 11/3/06
• Read 73-80 11/3/06
• W.S. 4.1 (DR/Quiz) 11/3/06
• 2A only p.80 1-5 (1-4 in complete
  sentences) 11/3/06
• Death By Osmosis Essay 11/3/06
• W.S. What Happened to Dinner? 11/7/06
• Due this class period
• Due next class period
• Due in the future

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Grade Sheet
1A SR p. 61 - 5 pts Measurement W.S. 10 pts
3A SR p. 42 6 pts
4A SR p. 47 5 pts
2A Measurement W.S. 10 pts
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Hypotonic

• high concentration of water outside of the cell
• Movement of water into the cell
• Cell swells
• Distilled water
• Pond water for most organisms
• must have contractile vacuole
• Cytolysis bursting of cells

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Hypertonic

• High concentration of water inside the cell
• Water moves out of the cell
• Cell shrinks (plasmolysis)
• Salt water

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Isotonic

• Same concentration inside and outside the cell
• No net movement of water
• no affect on the cell
• Blood plasma
• Why?

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Osmotic Pressure

• Plants, fungi, bacteria
• Turgor pressure (on cell wall)
• Animals
• Blood plasma (isotonic)
• freshwater protists
• Contractile vacuole sump pump

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Death by Osmosis!

• 2 paragraphs
• 1st paragraph
• explain how penicillin kills bacteria
• Do not plagiarize!
• 2nd paragraph
• give your opinion and justification about whether
  it should be taken on a daily basis.
• When completed, hand in (notes and essay stapled
  together)
• Read 73-80 or review notes