PLANT BIOLOGY NOTES

PLANT BIOLOGY NOTES - THE PLANT CELL STUCTURE CELL WALL...

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Unformatted text preview: THE PLANT CELL STUCTURE CELL WALL & PLASMA MEMBRANE ENCLOSING CYTOPLASM ORGANELLES BOUND IN MEMBRANE IN CYTOPLASM MOVED AND SUPPORTED BY CYTOSKELETON NUCLEUS CONTAINS DNA LARGE VACUOLE CELL MEMBRANE ENDOMEMBRANE - SYNTHESIS AND TRANSPORT NUCLEUS SURROUNDED BY NUCLEAR ENVELOPE ENDOPLASMIC RETICULUM 1. PERINUCLER ER 2. CORTICAL ER MAY BE ROUGH OR SMOOTH (COATED WITH RIBOSOMES) ER MATERIAL IS MODIFIED ANDSORTED IN THE GOLGI APPARATUS, TRAVELS TO PLASMA MEMBRANE AND VACUOLE IN VESTICELS MITOCONDRIA GENERATE ENERGY (ATP) FROM STORED FOOD CHLOROPLASTS CARRY OUT PHOTOSYNTHESIS CELL WALL DYNAMIC METABOLIC STRUCTURE MADE OF CARBOHYDRATE PLASMODESMATA INTERCONECT ADJOINING CELLS MEMBRANES BRIDGE CELL WALL INSIDE PLASMA MEMBRANE = SYMPLAST OUTSIDE PLASMA MEMBRANE = APOPLAST APOPLAST = WATER PERMEABLE SPACE, HYDROPHYLIC MOLECULES ARE DISSOLVED. (WATER LOVING MOLECULES) CELL WALL STRUCTURE PRIMARY CELL WALL MADE OF CELLULOSE SOME SGRETHENING CELLS AND VASCULAR TISSUE DEVELOPE SECONDRY CELL WALL BETWEEN PRIMARY ANS PLASMA MEMBRANE. LIGNINS STRENGTHEN (WOOD) CELL WALL FUNCTION ADHESION AND GROWTH AND FORMATION OF PLANT BODY PRIMARY CELL WALLS HIGH STREGTH AND OPPOSE TURGOR LIGNIFIED SECONDRY WALLS GIVE GREATER STRENGTH BARRIER TO PATHOGENS AND HERBIVORY (ANIMALS) PERMEABLE TO WATER AND SMALL MOLECULES DYNAMIC NATURE PERMITS CELL EXPANSION AND GROWTH PLASMODESMATA STRUCTURES MEMBRANES FROM ADJACENT CELLS CONNECT THROUGH PORE IN CELL WALL LINK PLASMA MEMBRANES AND CYTOPLASM PERMITS REGULAR TRANSPORT BETWEEN CELLS PLASTIDS AND MITOCONDRIA ORGANELS BOUNDED BY 2 EXTERNAL MEMBRANES PHOTOSYNTHETIC CHLOROPLASTS IN MESOPHYLL LAYER OF LEAVES AND CORTEX OF HERBACIOUS STEMS MITOCONDRIA CONVERT CARBOHYDRATES STORED INTO HIGH ENERGY ATP MEMBRANES HYDROPHOBIC(WATER REPELLING) REGION SOLUTES CANT PASS UNLESS THROUGH A MEMBRANE MEMBRANE ORGANELLES: MITOCONDRIA CHLOROPLASTS ENDOPLASMIC RETICULUM GOLGI APPARATUS ENDOPLASMIC RETICULUM FLATTENED SACS OR TUBES SMOOTH = LIPID SYNTHESIS ROUGH = PROTEIN SYNTHESIS PROTIENS SYTHESISED ON ROUGH ER RIBOSOMES GOLGI APPARATUS PROTIEN MODIFICATION, BEFORE TRANSPORTATION ELSWHERE THE PLASMA MEMBRANE SINGLE MEMBRANE ROUND CYTOPLASM REGULATES TURGIDITY BY OSMOSIS, CAUSING CYTOPLASM TO EXERT FORCE AGAINST CELL WALL COMMUNICATING WITH OTHER CELLS THROUGH PLASMONDESMATA TRANSPORTING NUTRIETS AND OTHER PRODUCTS RESPOND TO HORMONES TO ALTER CELL FUNCTIONS SECRETING MATERIALS MAINTAINS IONIC HOMEOSTATIS OF CYTOPLASM THE TONOPLAST SINGLE MEMBRANE ROUND VACUOLE MAINTAINS IONIC HOMEOSTATIS OF THE CYTOPLASM TRANSPORTS NUTRIENTS AND OTHER PRODUCTS CELL DIVISION THE CELL CYCLE OCCURS IN MERISTEMS MITOSIS - CHROMOSOMES REPLICATED , SORTED TWO NUCLEI CYTOKINESIS - CELL WALL, CYTOPLASM, ORGANELLES DIVIDE FOUR PHASES 1. G1- CELL ENLARGES ,NUCLEUS MIGRATES TO CENTER,...
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This note was uploaded on 10/19/2010 for the course BIOLOGY 23 taught by Professor 2 during the Spring '10 term at Dunwoody.

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PLANT BIOLOGY NOTES - THE PLANT CELL STUCTURE CELL WALL...

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