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CELLS

CELLS. Groups. 1s- pg 30-31 Compare and contrast multi-cellular and uni-cellular. 2s- pg 32-33 How were cells discovered and explain the cell theory. 3s pg 34-35 Compare and contrast the major differences between plant and animal cells.

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CELLS

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  1. CELLS

  2. Groups • 1s- pg 30-31 Compare and contrast multi-cellular and uni-cellular. • 2s- pg 32-33 How were cells discovered and explain the cell theory. • 3s pg 34-35 Compare and contrast the major differences between plant and animal cells. What feature typically makes plant cells boxy looking? • 4s Pg 38-39 Explain how multi-cellular organisms grow. Why can a cell only get so large???

  3. What is a cell? * The smallest unit that can carry out the activities of life! * The building blocks of all life!

  4. Jobs of cells • Even though they are tiny, each cell has everything it needs to survive and reproduce • Each part of the cell has a special job to do! DNA Nucleus

  5. Cell Theory • All living things are made of one or more cells. • Cells are the basic unit of living things. • All cells come from existing cells.

  6. Unicellular ONLY 1 cell that performs all jobs necessary to sustain the life of the cell http://www.youtube.com/watch?v=gKNzzxuz6uk&NR=1 Multi-Cellular Has 2 or more cells that have specialized jobs http://www.youtube.com/watch?v=RaAM8qQcs6E Elodea Amoeba

  7. Plant Animal 2 Types of cells

  8. Animal cells are eukaryotes (have a nucleus) Do NOT have a cell wall or chloroplast Millions of different types Can’t make their own food Animal cell

  9. Have chloroplast and a cell wall Plant cells are eukaryotes (have nucleus) Plant cells make there own food through photosynthesis Plant Cell

  10. Growing… • As multi-cellular organisms grow, the cells increase in number! • http://www.youtube.com/watch?v=rgLJrvoX_qo&feature=related • Chromosomes have all the information to divide

  11. Why so small???? To stay a live, cells • Must take in oxygen • Absorb food • Release waste

  12. Big Cell = • Need more food! 2. Too big to get rid of waste in time! 3. Big Pop! It’s not comin’ back! http://www.youtube.com/watch?v=TdMIsCF_7p0&feature=related

  13. Journal…. 1. Explain the difference between multi-cellular and unicellular (slide 6) • Describe the difference between a plant and an animal cell. (slide 7) • How do multi-cellular organisms grow? Why? (slide 10)

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