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Start New Unit – Cell Biology

Friday, March 9, 2012 Monday, March 12, 2012. Friday, March 9, 2012 Monday, March 12, 2012. Are Viruses Alive?/Characteristics of Life. Start New Unit – Cell Biology. Warm Up: Draw a food web OR food chain that involves at least 4 organisms. CHOOSE ONE to draw and discuss.

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Start New Unit – Cell Biology

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  1. Friday, March 9, 2012 Monday, March 12, 2012 Friday, March 9, 2012 Monday, March 12, 2012 Are Viruses Alive?/Characteristics of Life Start New Unit – Cell Biology Warm Up: Draw a food web OR food chain that involves at least 4 organisms. CHOOSE ONE to draw and discuss. Record your decision after reading the “Are Viruses Alive” article. Make your decision whether you think they are alive or not, then support your claim with evidence from the text! After you’ve completed the above task, open your text book to section 1.1 of Unit E and list the characteristics something must have to be considered living below. After reviewing this, does it change your mind about a virus? Why or why not? Homework: Read Section 1.1 of Unit E in textbook. Define the four vocabulary words and answer questions 1-5 on page 15E. Page 119 Page 120

  2. Tuesday, March 13, 2012 Wednesday, March 14, 2012 Tuesday, March 13, 2012 Wednesday, March 14, 2012 Cell Theory Cell Theory • Characteristics of Living Things Review • Organized • Use energy for chemical processes – • Respond to stimuli • Grow, develop, adapt • Reproduce / contain genetic material • All living things are made of cells. • Unicellular Multicellular • Cell Theory Warm Up: Classify as living or non-living List the characteristics you used to make your conclusion Homework: Page 121 Page 122

  3. Unicellular vs. Multicellular • Made of one single cell • Found mostly in or near water • Mainly bacteria • Called “Prokaryotes” • Can reproduce without the aid of another organism (Asexual) • Split apart and copy • Made of many (with different jobs) • more complex • Different parts of organism have different functions (roots vs. leaves) (heart vs. stomach) • Called “Eukaryotes” • Need another individual to reproduce (Sexual)

  4. Cell Theory • Every living thing is made up of at least one cell • Cells create structure and functions of life • Cells only come from other cells

  5. Significant Scientist FoldableHooke, Leeuwenhoek, Schleiden, Schwann, and Virchow Name Picture Date of Accomplishment Name Picture Date of Accomplishment Name Picture Date of Accomplishment Name Picture Date of Accomplishment Name Picture Date of Accomplishment Name Picture Date of Accomplishment 4 bullet points about their significance Name Picture Date of Accomplishment Name Picture Date of Accomplishment Name Picture Date of Accomplishment

  6. Warm up Sir Issac Newton once said, “If I have seen further, it is because I was standing on the shoulders of giants. Based on what you have learned, what is your interpretation of that statement

  7. Thursday, March 15, 2012 Friday, March 15, 2012 Thursday, March 15, 2012 Friday, March 15, 2012 Cell Parts/Organelles Cell Parts/Organelles Warm Up: How are the various jobs in a company, like Wal-mart, divided amng people? Why is it effective to divide labor this way? Attach Video Notes Attach Organelle Chart Attach Homework handout Homework: Finish Page 123 Page 124

  8. Monday, March 19, 2012 Tuesday, March 20, 2012 Monday, March 19, 2012 Tuesday, March 20, 2012 Cell Cycle Cell Cycle Warm Up: Sir Issac Newton once said, “If I have seen further, it is because I was standing on the shoulders of giants. Based on what you have learned, what is your interpretation of that statement. Cell cycle - normal sequence of the development and division of a cell Three main stages: 1) Interphase - cell is performing normal functions and preparing to divide - the longest part of the cycle - cell grows about twice its original size - goes about regular cell activities - DNA is copied to prepare for mitosis 2) Mitosis- nucleus splits and divides - prokaryotes do not do this(no nucleus) - usually the shortest period in cycle - goal of mitosis is to transfer DNA and other cell structures from parent cell to new cell 3) Cytokinesis – occurs directly after mitosis - parent cell pinches off - two genetically identical cells form Homework: Page 125 Page 126

  9. Cell Cycle Online video tutorial: http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_the_cell_cycle_works.html Mitosis Cytokinesis Interphase Interphase Interphase

  10. Cell Cycle Diagram Interphase Cytokinesis Mitosis

  11. Wednesday, March 21, 2012 Thursday, March 22, 2012 Wednesday, March 21, 2012 Thursday, March 22, 2012 Cell Transport Read Section 2.3 E and Answer Questions 1-6 • Exchange of materials between a cell and the environment • Water is necessary for transport of most materials. • The cell membrane is semi-permeable – some things can pass across. • Passive Transport (usually small particles) • Relies on concentration of substances and thermal energy (think of dye spreading in a beaker of water) • Two main categories: • 1. Diffusion: movement from an area of high concentration to low concentration • 2. Osmosis: diffusion of water across a semi-permeable membrane • Active Transport (usually large particles) • Relies on the cell providing energy supply (ATP) • Three Categories: • 1. Transport Proteins: Special proteins use ATP to pump materials into cell • 2. Endocytosis: membrane surrounds particles to move them inside • 3. Exocytosis :release of substances from inside vesicles through joining and then releasing from the cell membrane Warm Up: Identify following parts of the cell cycle: Interphase, Prophase, Metaphase, Anaphase, Telophase. What happens during cytokinesis????? Homework: Read section 2.3E (pg. 56 – 63E) and answer questions 1-6. Page 129 Page 130

  12. Exchanging materials between the cell and its environment Passive Transport Active Transport Transport Proteins use ATP Diffusion Endocytosis (reverse for Exocytosis) Osmosis

  13. Video’s and Examples Passive and Active Transport Animations Endocytosis and Exocytosis Animation

  14. Practice DIRECTIONS- First Identify if the process is moving materials by active or passive transport. Then determine if the process is diffusion, osmosis, transport proteins, endocytosis, or exocytosis. 1. WATER MOVES OUT OF PLANT LEAF, CAUSING IT TO WILT AND DRY. 2. IF YOU PLACE A TEA BAG IN WATER AND TEA IS MADE. 3. IF FOOD THAT IS TOO LARGE TO ENTER THROUGH THE CELL MEMBRANE IS BROUGHT INTO THE CELL TO KEEP IT FROM DYING. 4. YOU SMELL THE DELICIOUS ODOR OF BAKING COOKIES BEFORE YOU ENTER THE KITCHEN. 5. FRESH WATER MOVES INTO A SINGLE CELLED ORGANISM. 6. A ONE CELLED AMEOBA SURROUNDS A PARTICLE OF FOOD. 7. EXCESS SALT THAT AN IGUANA HAS SOAKED UP IN THE OCEAN IS REMOVED THROUGH THE NOSTRILS. 8. IF A PLANT PUMPS MINERALS FROM THE SOIL TO THE ROOT OF THE PLANT.

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