Lab Osmosis and Diffusion lab

1
Class Topics
Title Biology 11/5/07
Objectives

• To learn about cellular transport.

• Lab Osmosis and Diffusion lab
• Have your prelab out when the bell rings
• Notes
• Active Transport
• "183 nights between 20 March and 20 September
  times 7 hours per night of candle usage equals
  1,281 hours for a half year of candle usage.
  Multiplying by 100,000 families gives 128,100,000
  hours by candlelight. Each candle requires half a
  pound of tallow and wax, thus a total of
  64,050,000 pounds. At a price of thirty sols per
  pounds of tallow and wax (two hundred sols make
  one livre tournois), the total sum comes to
  96,075,000 livre tournois.
• Benjamin Franklin on the purpose of daylight
  savings time

Saturday, November 21, 2009 1258 AM
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Class Assignments
By When
What

• Osmosis Lab prelab 11/5/07
• Osmosis Lab results (not handed in) 11/6/07
• W.S. Science Skills 11/6/07
• Osmosis and Diffusion lab report 11/7/07
• Due this class period
• Due next class period
• Due in the future

3
Osmosis and Diffusion lab

• Do not test water for glucose in the beginning
  (step 2)
• Safety
• Goggles
• IKI will stain clothes
• Work on W.S. Science skills while waiting the
  15 minutes
• Eliminate the last part of the results section
• Explain what happened to the plant cells when
  introduced to NaCl