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CELLS
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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???
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What is a cell? * The smallest unit that can carry out the activities of life! * The building blocks of all life!
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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
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Cell Theory 1.All living things are made of one or more cells. 2.Cells are the basic unit of living things. 3.All cells come from existing cells.
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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=RaAM8qQcs6 E Amoeba Elodea
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2 Types of cells PlantAnimal
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Animal cell 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
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Have chloroplast and a cell wall Plant cells are eukaryotes (have nucleus) Plant cells make there own food through photosynthesis Plant Cell
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Growing… As multi-cellular organisms grow, the cells increase in number! http://www.youtube.co m/watch?v=rgLJrvoX _qo&feature=relatedhttp://www.youtube.co m/watch?v=rgLJrvoX _qo&feature=related Chromosomes have all the information to divide
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Why so small???? To stay a live, cells Must take in oxygen Absorb food Release waste
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Big Cell = 1.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/watc h?v=TdMIsCF_7p0&feature= related
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Journal…. 1. Explain the difference between multi-cellular and unicellular (slide 6) 1.Describe the difference between a plant and an animal cell. (slide 7) 2.How do multi-cellular organisms grow? Why? (slide 10)
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