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U7 cell anatomy

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U7 cell anatomy

  1. 1. Cell Anatomy Cell Parts & their Function
  2. 2. What is a Cell? A cell is the smallest unit that is capable of performing life functions. It is the basic unit of living things.
  3. 3. Cell Theory • All living things are made up of cells. • Cells are the smallest working units of all living things. • All cells come from pre-existing cells through cell division.
  4. 4. Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell Nerve Cell
  5. 5. Cell Organelles • Cell Parts are referred to as organelles.
  6. 6. Cell Wall Most commonly found in plant cells & bacteria Supports & protects cells Cell Wall
  7. 7. Cell Membrane • protective layer around all cells • allows food and oxygen into the cell and waste products out of the cell. Cell Wall Cell Membrane
  8. 8. Cytoplasm • Gel-like material • Surrounded by cell membrane Cell Wall Cell Membrane Cytoplasm
  9. 9. Nucleus • contains instructions for everything cell does; includes DNA Cell Wall Cell Membrane Cytoplasm Nucleus
  10. 10. Ribosome • Each cell contains thousands • Make proteins – (Think of it like a battery plant!) • Found on ER & floating throughout the cell Cell Wall Cell Membrane Cytoplasm Nucleus Ribosome
  11. 11. Endoplasmic Reticulum (ER for Short) • Moves materials around in cell • • – (Like a highway) Smooth type: lacks ribosomes Rough type : ribosomes embedded in surface Cell Wall Cell Membrane Cytoplasm Nucleus Ribosome ER
  12. 12. Mitochondrion • releases energy from food – (Energy Plant) • Controls level of water and other materials in cell Cell Wall Cell Membrane Cytoplasm Nucleus Ribosome ER Mitochondrion
  13. 13. Chloroplasts • • • • Found only in plant cells. Contains green chlorophyll Where photosynthesis takes place Helps plant cells make food. Cell Wall Cell Membrane Cytoplasm Nucleus Ribosome ER Mitochondrion Chloroplasts
  14. 14. Vacuole • membrane-bound temporary storage spaces • Contains water solution • Help plants maintain shape Cell Wall Cell Membrane Cytoplasm Nucleus Ribosome ER Mitochondrion Chloroplasts Vacuoles
  15. 15. Golgi Body • Protein 'packaging plant' • Move materials within the cell • Move materials out of the cell Cell Wall Cell Membrane Cytoplasm Nucleus Ribosome ER Mitochondrion Chloroplasts Vacuoles Golgi Body
  16. 16. Make a Cell • Your assignment: – We will make a model of the cell using the materials on the table. – You must use the paper plate as the basis of your cell.
  17. 17. Bibliography • http://www.science-class.net/PowerPoints/Cell_st • Glencoe Life Structure Book A

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