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.

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Presentation transcript:

CELLS

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

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

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

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.

Unicellular ONLY 1 cell that performs all jobs necessary to sustain the life of the cell NR=1 Multi-Cellular Has 2 or more cells that have specialized jobs E Amoeba Elodea

2 Types of cells PlantAnimal

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

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

Growing… As multi-cellular organisms grow, the cells increase in number! m/watch?v=rgLJrvoX _qo&feature=relatedhttp:// m/watch?v=rgLJrvoX _qo&feature=related Chromosomes have all the information to divide

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

Big Cell = 1.Need more food! 2. Too big to get rid of waste in time! 3. Big Pop! It’s not comin’ back! h?v=TdMIsCF_7p0&feature= related

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)