CHAPTER 7 CELL STRUCTURE & FUNCTION PGS. 168 - 199 CELL STRUCTURE & FUNCTION.
Cell Structure & Function
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Transcript of Cell Structure & Function
Cell Structure & Function
http://koning.ecsu.ctstateu.edu/cell/cell.html
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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
Examples of CellsAmoeba Proteus
Plant Stem
Red Blood Cell
Nerve Cell
Bacteria
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
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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
http://waynesword.palomar.edu/images/plant3.gif
“Typical” Plant Cell