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The Building Blocks of Life
Cells Cells The Building Blocks of Life
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Cells Cells are the basic unit of structure and function in living things
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Parts of a Cell Each cell part has a special job or “function”!
Just like the parts of a city!
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What types of jobs do cells need to perform?
Produce energy Digest food Get rid of wastes Transport materials Reproduce
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Check Point 1 Why are cells so important?
They contain materials necessary for life They perform life functions They are the basic unit of living things All of the Above
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Parts of a Cell
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Cell Membrane Protects cell Acts as a “gate-keeper” or door way
Found in all types of cells!
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Cell Wall Stiff & rigid to provide support Outermost layer
Only in PLANT Cells
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Nucleus The control center for all cell activities “City Hall”
Acts like the brain Contains genetic material (DNA)
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Cytoplasm Jelly-like substance Holds cell organelles
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Check Point 2 Which cell part is known as the brain that controls all cell activities? Cytoplasm Nucleus Cell membrane Cell Wall
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Organelles “tiny organs” They also have membranes
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Mitochondria Produces energy for the cell The “power house”
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Ribosomes Produce protein for the cell Like little factories
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Endoplasmic Reticulum “ER”
Transports materials through the cell The roadways
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Golgi Body Receive, package, and carry materials around the cell
The post office
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Lysosomes Break down food & wastes Garbage Collectors
Only in Animal Cells!
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Vacuoles Store water, food, and wastes Water Tower
Much larger in plant cells
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Chloroplast Contain chlorophyll (green pigment) Photosynthesis
Capture sun’s energy Only in Plant Cells!
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Plant vs. Animal Cells Plant Cell Animal Cell Cell Wall
Large central vacuole Has Chloroplast Square box-like shape NO cell wall Several smaller vacuoles Has lysosomes Round shape
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Two types of cells Eukaryotic Cells Prokaryotic Cells Plant Cells
Animal Cells
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Comparing Cell Types Eukaryotic Cells Prokaryotic Cells
Multicellular organisms Have organelles More advanced Have nucleus Unicellular organisms No organelles Less advanced No nucleus
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Check Point 3 What do plant cells have that animal cell do NOT?
Cell wall Chloroplasts Mitochondria Both a & b
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