Please enable JavaScript.

Coggle requires JavaScript to display documents.

Bio revision (cell Biology (1.2 cell ultra structure (1.3 membrane (1.4…

- - - - 1.4 membrane transport :
        
        passive transport
        
        high concentration to low concentration
        
        pass through membrane, does not require energy (atp)
        
        Active transport
        
        againest concentration gradient
        
        require ATP
        
        require protein pump
      - membrane structure
        
        David dainelli model
        
        problems with this model
        
        fluid mosaic model (plasma membrane)
        
        duel membrane
    - - prokaryotic (latin: before nucleus), does not contain nucleus
      - Eukaryote, nucleus contained within membrane
  - - - atoms have smaller wavelength
        
        hence electron microscope has better magnification and resolution
- - - - 2.6 RNA structure
      - 2.7 DNA replication and transportation
        
        PCR
  - - - pedigree charts
- - - - monosaccharides
        
        single molecules
        
        Glucose (C6H12O6) this is a hexose
        
        Galactose (hexose sugar)
        
        Fructose
        
        Pentose sugar
        
        Ribose
        
        Pentose sugar
      - disaccharides
        
        two molecules
        
        Sucrose, lactose and maltose
        
        Sucrose
        
        C12H22O11
        
        lactose
        
        C12H22O11
        
        maltose
        
        C12H22O11
      - polysaccharides
        
        3 or more
        
        glycogen and cellulose. (cellulose acts as structural material )
        
        glycogen
        
        cellulose
        
        Structural material
        
        Starch
        
        Amylose
        
        Amylopectin
      - carbohydrates store and supply energy , also can serve as structural material
    - - organic molecules composed of carbon, hydrogen, and oxygen atoms. The ratio of hydrogen atoms to oxygen atoms is much higher in lipids than in carbohydrates
    - - Made up of amino acids , contains carbon, hydrogen, oxygen, and nitrogen atoms (some amino acids can contain sulfur)
        
        Amino acids