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Cell Structure & Function. http://koning.ecsu.ctstateu.edu/cell/cell.html. Red is your subject (left side) Navy Blue is your info (right side). Cell Theory. All living things are made up of cells Cells are the smallest working units of all living things
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Cell Structure & Function http://koning.ecsu.ctstateu.edu/cell/cell.html
Red is your subject (left side)Navy Blue is your info (right side)
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.
Definition of Cell A cell is the smallest unit that is capable of performing life functions
Red Blood Cell Nerve Cell Plant Stem Bacteria Amoeba Proteus Examples of Cells
Cell Parts aka Organelles
Cell Membrane • Outer membrane of cell that controls movement in and out of the cell • Double layer • Nickname: Border Patrol • Analogy: Border http://library.thinkquest.org/12413/structures.html
Cell Wall • Most commonly found in plant cells • Supports & protects cells • Nickname: Tree Bark • Analogy: brick wall http://library.thinkquest.org/12413/structures.html
Nucleus • Directs cell activities • Contains genetic material – DNA • Nickname: Control Center • Analogy: City Hall
Cytoplasm • Gel-like mixture • Surrounded by cell membrane • Nickname: Jello • Analogy: atmosphere (air)
Ribosomes • Each cell contains thousands • Make proteins • Found on Endoplasmic Reticulum & floating throughout the cell • Nickname: Ribs!! • Analogy: Lumber Mill http://library.thinkquest.org/12413/structures.html
Mitochondria • Produces energy through chemical reactions – breaking down fats & carbohydrates • Nickname: Powerhouse • Analogy: Power Plant http://library.thinkquest.org/12413/structures.html
Vacuoles • Membrane-bound sacs for storage, digestion, and waste removal • Usually contains water • Much larger in plant cells • Nickname: Ziploc bag • Analogy: Water Tower http://library.thinkquest.org/12413/structures.html
Chloroplast • Usually found in plant cells • Contains green chlorophyll • Where photosynthesis takes place • Nickname: greenhouse • Analogy: solar panels http://library.thinkquest.org/12413/structures.html
Lysosome • Digestive organelle for proteins, fats, and carbohydrates • Transports undigested material to cell membrane for removal • Cell breaks down if lysosome explodes • Nickname: Garbageman • Analogy: Waste Management http://library.thinkquest.org/12413/structures.html
“Typical” Animal Cell http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif
“Typical” Plant Cell http://waynesword.palomar.edu/images/plant3.gif