Cell Organelles
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Transcript of Cell Organelles
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Cell OrganellesFUNCTIONS
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What do Cells Contain?OrganellesIons – Na+, H+, Ca+, K+,Enzymes (cellulase)LipidsNucleic AcidsCarbohydratesCarbon compounds (C6H12O6)CoenzymesProteins
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CELL MEMBRANESUPPORT AND PROTECT CELLSSELECTIVELY PERMEABLE – ALLOWS
SOME SUBSTANCES TO ENTER AND KEEPS OTHER SUBSTANCES OUT
THIN, FLEXIBLE BILAYERALL CELLS HAVE A CELL MEMBRANE
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CELL WALLSUPPORT AND PROTECT CELLSLOCATED OUTSIDE OF THE CELL
MEMBRANEPLANT, FUNGI, PROTIST AND BACTERIA
HAVE CELL WALLSANIMAL CELLS DO NOT HAVE CELL WALLS
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NUCLEUSTHE CONTROL CENTER OF THE CELLCONTAINS THE CHROMOSOMES –
STRUCTURES THAT CONTAIN DNA(THE GENETIC INFORMATION)
CHROMOSOMES (RODLIKE) WHEN CELL IS DIVIDING;
CHROMATIN (THREAD LIKE)WHEN CELL IS NOT DIVIDING;
SYNTHESIZES RNA AND RIBOSOMES
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CYTOPLASM (CYTOSOL)HOLDS THE OTHER CELL ORGANELLESGEL LIKE SUBSTANCELOCATED WITHIN THE CELL MEMBRANE
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NUCLEOLUSMAKES AND PARTIALLY ASSEMBLES
THE RIBOSOMES INSIDE OF THE NUCLEUS
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NUCLEAR ENVELOPEALLOW MATERIALS TO MOVE INTO
AND OUT OF THE NUCLEUSDOUBLE MEMBRANESURROUNDS THE NUCLEUSALSO CALLED THE NUCLEAR
MEMBRANE
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CYTOSKELETONHELPS THE CELL MAINTAIN ITS SHAPETHE TWO PARTS OF THE
CYTOSKELETON ARE:MICROTUBULES – MAINTAIN CELL
SHAPE & SERVE AS TRACKS ALONG WHICH ORGANELLES MOVE (TUBE SHAPE)
MICROFILAMENTS – MOVEMENT AND SUPPORT OF THE CELL (THIN FILAMENTS)
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RIBOSOMESSITE OF PROTEIN SYNTHESISFREE FLOATING IN CYTOPLASM ORATTACHED TO ENDOPLASMIC RETICULUM
(ROUGH)
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ROUGH ENDOPLASMIC RETICULUM
INVOLVED IN THE SYNTHESIS OF PROTEINS
CHEMICALLY MODIFIES PROTEINSPREPARES PROTEINS FOR EXPORTCOVERED WITH RIBOSOMES
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SMOOTH ENDOPLASMIC RETICULUMSynthesis of lipids; Synthesis of membranes in the cell;
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GOLGI APPARATUSPROCESSESs, PACKAGES AND
DELIVERS SUBSTANCES PRODUCED BY THE CELL
(THE “UPS/FEDEX/USPS” OF THE CELL)
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LYSOSOMES (lyse – break down)CONTAIN ENZYMESBREAK DOWN LIPIDS,
CARBOHYDRATES AND PROTEIN FROM FOOD
BREAK DOWN OLD WORN-OUT ORGANELLES
REMOVE “GARBAGE” FROM THE CELLMANY IN ANIMAL CELLSFEW IN PLANT CELLS
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VACUOLESSTORE ENZYMES, WATER AND WASTE
PRODUCTS,
IN PLANTS, ONE LARGE FLUID-FILLED VACUOLE
ANIMAL CELLS HAVE MANY SMALL VACUOLES
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MITOCHONDRIATHE POWERHOUSE OF THE CELL;TRANSFERS ENERGY FROM ORGANIC
COMPOUNDS (GLUCOSE) TO ATP;ATP IS THE CHEMICAL COMPOUND
THAT THE CELL BREAKS DOWN TO GET ENERGY;
THE SITE OF CELLULAR RESPIRATION;
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CHLOROPLASTSCONVERTS THE ENERGY OF SUNLIGHT
INTO CHEMICAL ENERGY IN ORGANIC COMPOUNDS (GLUCOSE)
THE SITE OF PHOTOSYNTHESIS
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`DIFFERENCES BETWEEN PLANT & ANIMAL CELLSANIMAL CELLS HAVE CENTRIOLES –
SERVE AS AN ANCHOR FOR THE SPINDLE FIBERS IN CELL DIVISION;
PLANT CELLS HAVE:A LARGE, FLUID-FILLED VACUOLECHLOROPLASTSCELL WALL
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ORGANELLES UNIQUE TO PLANTSPLASTIDS –
CHLOROPLAST – SITE OF PHOTOSYNTHESIS; CONTAINS CHLOROPHYLL;
CHROMOPLAST – STORES COLOR PIGMENTS – XANTHROPHYLLS (YELLOWS) AND CAROTENOIDS (REDS AND ORANGES)
LEUCOPLAST – STORES STARCH
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CILIA AND FLAGELLACILIA –
MOVEMENT AND FOOD-GETTINGTINY, HAIRLIKE PROJECTIONS PRESENT IN
HUGE NUMBERSFLAGELLA
MOVEMENT AND FOOD-GETTINGLONG, WHIPLIKE STRUCTURES, USUALLY
ONLY A FEW PRESENT
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CILIA & FLAGELLA
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CELL PROJECTCELL DIORAMABRING IN MATERIALS SUCH AS:
PASTA - UNCOOKED(MACARONI, RIGATONNI, LASAGNA)DRIED BEANS - UNCOOKEDSTRAWSMATERIAL SCRAPSCOTTON BALLSYARNPIPE CLEANERSBUTTONSBOLTS, NUTS, SCREWS, ETC.NO CANDY!!!!!