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Transcript
Cell Anatomy Cell Parts & their Function 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. Cell Theory • All living things are made up of cells. • Cells are the smallest working units of all living things. • All cells come from preexisting cells through cell division. Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell Nerve Cell Cell Organelles • Cell Parts are referred to as organelles. Cell Wall Most commonly found in plant cells & bacteria Supports & protects cells Cell Wall 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 Cytoplasm • Gel-like material • Surrounded by cell membrane Cell Wall Cell Membrane Cytoplasm Nucleus • contains instructions for everything cell does; includes DNA Cell Wall Cell Membrane Cytoplasm Nucleus 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 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 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 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 Vacuole • membrane-bound temporary storage spaces • Contains water solution • Help plants maintain shape Cell Wall Cell Membrane Cytoplasm Nucleus Ribosome ER Mitochondrion Chloroplasts Vacuoles 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 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. Bibliography • http://www.scienceclass.net/PowerPoints/Cell_structure_functio n.htm • Glencoe Life Structure Book A