cell structure & function
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
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Cell Structure & Function
http://koning.ecsu.ctstateu.edu/cell/cell.html
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Red is your subject (left side)
Navy Blue is your info (right side)
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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.
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Definition of Cell
A cell is the smallest unit that is capable of performing life
functions
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Examples of CellsAmoeba Proteus
Plant Stem
Red Blood Cell
Nerve Cell
Bacteria
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Cell Parts
aka Organelles
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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
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Cell Wall• Most commonly found
in plant cells• Supports & protects
cells• Nickname: Tree Bark• Analogy: brick wall
http://library.thinkquest.org/12413/structures.html
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Nucleus
• Directs cell activities• Contains genetic
material – DNA• Nickname: Control
Center• Analogy: City Hall
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Cytoplasm• Gel-like mixture• Surrounded by cell membrane• Nickname: Jello• Analogy: atmosphere (air)
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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
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Mitochondria• Produces energy through
chemical reactions – breaking down fats & carbohydrates
• Nickname: Powerhouse• Analogy: Power Plant
http://library.thinkquest.org/12413/structures.html
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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
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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
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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
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“Typical” Animal Cell
http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif
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http://waynesword.palomar.edu/images/plant3.gif
“Typical” Plant Cell