Go to Sectio n: The Cell Theory All living things are composed of cells. Cells are the basic units of structure and function in living things. New cells are produced from existing cells.
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The Cell Theory
All living things are composed of cells.Cells are the basic units of structure and function in living things.New cells are produced from existing cells.
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Prokaryotic Cells
Bacteria and cyanobacteriaNo true nucleus; lacks nuclear envelopeGenetic material in nucleoid regionNo membrane-bound organelles
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Eukaryotic Cells
Plants, animals, fungi, protistsTrue nucleus; bounded by nuclear envelopeGenetic material within nucleusContains cytoplasm with cytosol and membrane-bound organelles
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Prokaryotic Cell
Cell membrane
Cell membrane
Cytoplasm
Cytoplasm
Nucleus
Organelles
Eukaryotic Cell
Section 7-1
Prokaryotic and Eukaryotic CellsComparison of Prokaryotic and Eukaryotic Cells
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Prokaryotic Cell
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Animal Cell
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Plant Cell
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Prokaryotes Eukaryotes
Cell membraneContain DNA
NucleusEndoplasmic reticulum
Golgi apparatusLysosomesVacuoles
MitochondriaCytoskeleton
Animal Cells Plant Cells
Centrioles
Cell membraneRibosomes
NucleusEndoplasmic reticulum
Golgi apparatusLysosomesVacuoles
MitochondriaCytoskeleton
Cell WallChloroplasts
Section 7-2
Venn Diagrams
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Nucleus
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Ribosomes – builds cell’s proteins
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Functions of the Endoplasmic Reticulum
Smooth ERSynthesizes lipids, phospholipids and steroidsParticipates in carbohydrate metabolismDetoxifies drugs and poisonsStores calcium ions necessary for muscle contraction
Rough ERManufactures proteins that are secreted and membranes
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Golgi apparatus – finishes, sorts, and ships many products of the cell
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Lysosome – digestive compartments
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Formation and Function of Lysosomes
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Plant Cell Vacuole – stores compounds
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Mitochondrion – site of cellular respiration
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Chloroplast – site of photosynthesis
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Structure and Function of the Cytoskeleton
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Motor Molecules and the Cytoskeleton
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Plant Cell Walls – protect cells, maintain shape, prevent excess water uptake
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Animal Cell Plasma Membrane