Unit 1 Topic 2

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  • Created by: Alex Cole
  • Created on: 02-01-13 11:37
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  • Unit 1 Topic 2
    • Cell membrane
      • Phospholipid bilayer
      • non polar
      • fatty acid tail and the phosphate head
    • Proteins
      • made up of C,H,O,N
      • contain  an R group
        • a carboxyl group
        • an amine group
      • different shapes
    • Osmosis
      • the movement of water from high to low concentration
      • isotonic
        • equal
      • hypertonic
        • lower
      • hypotonic
        • higher
    • Transport across the Membrane
      • polar molecules pass through peripheral proteins
      • diffusion
        • ficilitated diffusion
      • osmosis
      • exocytosis
        • endocytosis
      • active transport
    • Lungs
      • breathing is an active process
      • alveoli are one cell thick
        • short diffusion distance
        • capillary walls are one cell thick
      • the surface of the alveoli is folded to increase surface area
    • DNA
      • deoxyribonucleic acid
      • codes for proteins
      • triplet code
      • double stranded
        • double helix
      • made up of a pentose sugar
        • phosphate group
        • nitrogenous base
        • DNA nucleotide
      • mRNA
        • tRNA
    • Cystic Fibrosis
      • caused by a mutated gene
      • affects the movement of salt and water in the body
      • causes thick mucus
      • affects the lungs and the digestive system
      • treatments include physiotherapy and medication

Comments

Shamima

Heyyy...this is really good....ermmm is it owkaii if you could explain the semi-conservative theory...I don't quite get that ???

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