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CELLS

Explore the fascinating world of cells with a focus on the differences between unicellular and multicellular life forms, the discovery of cells, the cell theory, and the unique features of plant and animal cells. Learn how cells grow, why they have size limitations, and the crucial roles they play in sustaining life. Discover the intricate workings of cells and uncover their significance in the grand tapestry of biology.

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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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