1. Welcome to Science Objective: Explore Cells Good Morning

2. Cells and Organelles Cells are the basic units of form and function in living things. Cells have forms (structures) inside them that do different jobs. These structures are called organelles. Plant and animal cells have many in common. BrainPop: Cells

3. Organelles in Common Plant and animal cells both have: –Cell membrane –Cytoplasm –Nucleus –Ribosome –Endoplasmic reticulum –Golgi body –Cytoskeleton –Nucleolus –Mitochondrion –Lysosome –Vacuole –Centrosomes Each of these structures does a specific job for the cell!

4. Plant Cell http://library.thinkquest.org/C004535/eukaryotic_cells.html

5. Animal Cell BrainPop: Organelles

6. Cell Membrane Forms the outer boundary of animal cells. Found inside the cell wall in plant cells. Determines what can enter and leave a cell. Made of protein and fat. http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookCELL2.html#The%20Cell%20Membrane

7. Cytoplasm The watery environment of the cell. www.ndsu.nodak.edu/.../ 135/images/CELLCYTO.GIF

8. Nucleus The command center of the cell. Contains DNA (deoxyribonucleic acid) the command molecule of the cell. Surrounded by a membrane. http://ntri.tamuk.edu/cell/nucleus.html

9. Nucleolus The nucleolus is found inside a cell’s nucleus. The nucleolus makes ribosomes for the cell. http://www.cs.utexas.edu/users/s2s/latest/cell1/src/tutorial/nucleolus.html NUCLEUS NUCLEOLUS

10. Rough Endoplasmic Reticulum (RER) The RER is responsible for modifying proteins that have been made by the cell. It is rough because the RER membrane is studded with ribosomes. http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookCELL2.html#Endoplasmic%20reticulum RER portion

11. Ribosomes Ribosomes are found attached to the rough endoplasmic reticulum (RER) Ribosomes are also found floating in the cytoplasm. Their job is to make proteins that are molecules that help to build and repair cells. http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookCELL2.html#Endoplasmic%20reticulum http://micro.magnet.fsu.edu/cells/animals/images/ribosome.jpg

12. Mitochondrion Found in both plant and animal cells. Performs the process of cellular respiration in which glucose sugar is broken down to provide energy for the cell. http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookCELL2.html#Mitochondria

13. Lysosome Lysosomes are digestive structures in the cell. They contain enzymes which are molecules that can break other molecules down. http://library.thinkquest.org/~C004535/lysosomes.html http://micro.magnet.fsu.edu/cells/animals/images/lysosome.jpg

14. Vacuole Vacuoles serve different functions in plant and animal cells. In plant cells they store water. In animal cells they may contain food, water or waste. http://library.thinkquest.org/~C004535/vacuole.html Water vacuole in a plant cell http://www.emc.maricopa.edu/faculty/farabee/BIOBK/paramecvacs.gif

15. Chloroplast Only found in plant cells Perform photosynthesis a process where glucose sugar and oxygen are made from carbon dioxide and water. http://ntri.tamuk.edu/cell/nucleus.html http://botit.botany.wisc.edu/images/130/Plant_Cell/Elodea/Cyto_strand_nucleus_MC.html Elodea cells with chloroplasts Plant Cell

16. Cell Wall Only found in plant cells. Made of a carbohydrate called cellulose Provides structure and support for plant cells http://botit.botany.wisc.edu/images/130/Plant_Cell/Elodea/Cyto_strand_nucleus_MC.html http://library.thinkquest.org/~C004535/cell_wall.html

17. Cell Theory All living things are made of cells. Cells are the basic units of form and function in living things. All cells come from pre-existing cells.

18. BrainPop Learn more at Cells Alive Quia Cell Games The next investigation to explore… Identifying organelles from slides