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CELLS
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Cell Analogy = A factory contains many areas that act similarly to the parts in a cell. These parts of a cell are called organelles. A factory assembles parts to make an product/invention. A cell assembles amino acids to make proteins.
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What are Proteins for? Control the rate of reactions
Regulate cell processes Form bones + muscle Transport substances in and out of cells Help fight disease
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Two Main Groups of Cells
Prokaryotic Cells Less complex and less advanced(more primitive) No nucleus or other specialized cell parts Examples: Bacteria Cells Eukaryotic Cells More complex cells. Contain specialized cell parts (organelles) such as cell nucleus, mitochondria, chloroplasts (plants), etc. Examples: animal cells, plant cells, and some single celled organisms called protists.
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PLANT CELL (eukaryotic)
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ANIMAL CELL (eukaryotic)
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CELL MEMBRANE ALL CELLS HAVE CELL MEMBRANE PROTECTS CELL
CONTROLS WHAT ENTERS AND EXITS CELL CONSISTS OF 2-LAYERS OF LIPIDS/FAT & PROTEIN CHANNELS
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CELL WALL FOUND ONLY IN PLANT CELLS AND SOME BACTERIA
PROTECTS AND SUPPORTS CELL
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CYTOPLASM Cytoplasm is the liquid that is inside the membrane but outside the nucleus. The ‘soup’ inside the cell. Provides an environment for other organelles to reside.
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NUCLEUS
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NUCLEUS CONTROL CENTER OF CELL (“brain of cell”)
CONTAINS GENETIC MATERIAL (DNA) CONTROLS ALL CELL ACTIVITIES
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MITOCHONDRIA ‘POWER HOUSE’ OF CELL (‘mighty mitochondria”)
CONVERTS ENERGY INTO MORE USABLE FORMS FOR CELL (ATP!) Cellular Respiration occurs in mitochondria
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CHLOROPLASTS FOUND IN PLANT CELLS AND SOME BACTERIA
CONVERT SUNLIGHT ENERGY INTO SUGAR (CHEMICAL ENERGY) = PHOTOSYNTHESIS CONTAIN GREEN PIGMENT CHLOROPHYLL
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RIBOSOMES SITE WHERE PROTEINS ARE MANUFACTURED
SOME ARE ‘FREE’ AND SOME ARE ATTACHED TO ENDOPLASMIC RETICULUM (ER)
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ENDOPLASMIC RETICULUM (ER)
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ENDOPLASMIC RETICULUM (ER)
Two types of endoplasmic reticulum (rough and smooth) Rough ER is where proteins are modified The Smooth ER makes the lipid components of the cell membrane
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Golgi Apparatus Modifies, sorts, and packages proteins or other products from ER
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LYSOSOMES CLEAN-UP CREW OF CELL
CONTAINS DIGESTIVE ENZYME THAT BREAK DOWN WASTE
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VACUOLES PRIMARILY FOUND IN PLANT CELLS
PROVIDES A PLACE FOR STORAGE AND CONTAINS MAINLY WATER AND WASTE PRODUCTS PROVIDES SUPPORT AND TRANSPORTS MATERIALS THE ‘CENTRAL VACUOLE IN PLANT CELLS’ OCCUPIES ¾ OF CELL VOLUME
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