why do we have over 35 trillion cells?. what is a cell? cell: smallest unit of living matter that...
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WHY DO WE HAVE OVER 35 TRILLION CELLS?
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What is a cell?
Cell: Smallest unit of living matter that can carry out all processes required for life
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Cells have 2 main categories
Prokaryotic Cells
NO nucleus
NO membrane-bound organelles
LOOSE DNA in the cytoplasm
Prokaryotes are single-celled
Eukaryotic Cells
Nucleus
Membrane-bound organelles
DNA found in the nucleus
Eukaryotes can be single or multi-cellular
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2 Main types of Eukaryotic Cells
Animal Cells
Found in all animals
Plant Cells
Found in all plants
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Organelles
Organelle = little organ
Structures specialized to perform distinct processes within a cell
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https://www.youtube.com/watch?v=-zafJKbMPA8
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Cytoplasm
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Cytoskeleton
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Nucleus
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Endoplasmic Reticulum
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Ribosomes
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Golgi Apparatus
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Mitochondria
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Vacuole
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Lysosome
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Cell Wall – Plants only!
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Chloroplast – Plants only!
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Cilia
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Cell Membrane/Plasma Membrane
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