Biology part 1 additional science

  • Created by: Connor
  • Created on: 11-02-14 19:03
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    • animal cell
      • nucleus: what happens in the cell, contains chromosomes
      • ribosomes: ball shape structures, where proteinsynthesis happens
      • mitochondria: rod shape structures that creates respiration
      • cytoplasm: jelly like substance where chemical reactions happen
      • cell membrane: the semi permeable membrane that forms the outer layer
    • plant cell
      • permanent vaculoe: supports the cell filled with cell sap
      • cell wall: the outer layer of the cell that provides support made of cellulose
      • chloroplast: contains green pigment chlorophyll for photosynthesis
    • bacteria
      • unicellular organ made up of one cell
      • some bacteria cells have a capsule surrounding them to provide protection
      • contain chromosomes, cytoplasm, cell membrane, cell wall
    • fungi cell
      • have a nucleus, chloroplast, vacuole, nucleus
      • the cell wall is made of chitin
    • differenation
      • when cells become specialised by developing special features to enable them to perform specific functions
    • diffusion and how to increase it
      • the movement of gases or dissolved molecules from a HG to a LG over the CG
      • increase the surface area
      • distance
      • concentration gradient
    • tissues
      • a group of cells with the same specific features to perform the same specific function
      • cells-> tissues-> organs-> systems-> organisms
    • stomach
      • outer and inner epithelial tissues: provide protection
      • glandular tissue: secretes acid and enzymes into the stomach
      • muscular tissues: contracts and churns up food with acid and enzymes
    • plant organ
      • leaf: absorb sunlight for photosynthesis
      • stem: holds up the plant and delivers food
      • roots: anchors the plant and absorb water and nutrients
      • flower: the reproductive organism
    • xylem
      • plant tissues which transports water and minerals from the root to the leaf
      • a row of dead cells, the cell wall ends are missing acting like a straw
    • photosynthesis
      • water+c02--light+chlorophyll--> glucose+oxygen
      • the glucose created is transported by the phloem
      • glucose can be converted to starch and is used as a food storage
      • the glucose molecules can join together to form cellulose
      • c02,water and sunlight affects the rate of photosynthesis
    • phloem
      • a plant tissues made up alive cells that transport glucose to every part in the cell


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