Hand in W.S.

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Class Topics
Title Biology 10/12/06
Objectives

• To learn about microscopes and scientists that
  discovered cells and cell parts.

• Hand in W.S. Structure and Function of Cells
  before the bell rings.
• Review Microscope lab
• Microscope quiz
• Notes Cells
• Surface AreaVolume
• Eukaryotic, prokaryotic, cell parts
• Obstacles are those frightful things you see
  when you take your eyes off your goal.
• Henry Ford

Monday, March 09, 2015 157 PM
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Class Assignments
By When
What

• Microscope quiz 10/12/06
• W.S. Structure and Function of Cells 10/12/06
• Chapter 3 Quiz 1 10/16/06
• Read 55-61 10/16/06
• W.S. 3.2 (DR/Quiz) 10/16/06
• Due this class period
• Due next class period
• Due in the future

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1A 4B Grade Sheet
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2A Grade Sheet
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3A Grade Sheet
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4A Grade Sheet
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Postquiz Activities

• Hand in quiz
• Pick up W.S. 3.2 from the lab stool
• Choose from the following
• Read 55-61
• Correct homework
• Work on W.S. 3.2

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Cell Theory

• All living things are composed of one or more
  cells.
• Cells are the basic units of structure and
  function in living things.
• All cells come from preexisting cells.

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Cell SizeMath lab p. 56

• Most organisms have many small cells rather than
  fewer large ones
• Why?
• Surface area-to-volume ratio
• 61 good
• 31 very large for cells
• Any lower than this is very dangerous
• Allows transfer of materials in and out of cell
  easily
• Cell size small, SAVol high
• Cell size large, SAVol low

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Chapter 3 Quiz 1 Review

• List the cell theory
• Matching
• Scientists Hooke, van Leeuwenhoek, Schleiden,
  Schwann, Virchow
• Short answer
• Microscopes
• Differences electron microscopes
• Advantages/disadvantages
• Image produced by
• Long answer
• Surface areavolume

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All cells have

• Cell membrane around outside
• Cytoplasm fluid of cell
• Cytoskeleton structure of cell
• Ribosomes make protein
• DNA used to make protein
• Some lose these after time due to specialization

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Prokaryotes Bacteria

• Single-celled organism
• Lacks nucleus and membrane bound organelles
• DNA in a circular loop
• Not chromosomes
• Cell wall
• An organelle is a structure within a cell that
  performs a specific function

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Eukaryote

• Organism that has cells with nuclei and internal
  compartments (membrane bound organelles)
• ex. animals, fungi, plants, protists
• Internal membranes connect organelles
• Vesicles
• Small cavity to move materials around cell