Please enable JavaScript.

Coggle requires JavaScript to display documents.

Biology Paper 1 - Coggle Diagram

- - - - Controls the cell activities
      - Contains DNA
    - - Provides strength and protection
    - - Where chemical reactions take place
    - - Contain enzymes for respiration
    - - Where protein synthesis takes place
    - - Control substances that enters and exits a cell
  - - - Controls the cell activities
      - Contains DNA
    - - Where chemical reactions take place
    - - Contain enzymes for respiration
    - - Where protein synthesis takes place
    - - Control substances that enters and exits a cell
    - - Provides strength and protection
    - - Maintains water balance
  - - - Plant Cells
      - Animal Cells
  - - - Bacteria
      - Plasmid ring of DNA
  - - - Chromosomes copied
        
        Humans have 23 chromosomes
      - Line up along line
      - Chromosomes Pulled apart
      - Cell separates into 2
  - - - Sex cells e.g Sperm and Egg cells
      - Daughter cells
    - - Cell in ovary / testes DNA copied
      - Crosses over
      - Divides twice
  - - - Used to study living cells
      - Low magnification and resolution
    - - Cannot be used to study living cells
      - High magnification and resolution
  - - - T + A
      - C + G
      - Every 3 bases are code for aminoacid
        
        Aminoacid tells the cell what order to put in to synthesise protein
        
        Eye colour
        
        Hair colour
  - - - Aim - To measure the effect of osmosis
      - Method
        
        Peel the potato
        
        Cut same size cylinders of potato
        
        Measure the length of cylinders using a ruler and the mass using a balance
        
        Place each cylinder into a test tube and add 10cm3 of 0.5 molar sugar solution to the first test tube
        
        Add 10cm3 of 0.25 molar sugar solution to the second test tube
        
        Add 10cm3 of distilled water to the third test tube
        
        Leave potato overnight to allow osmosis to take place
        
        Remove cylinders and gently roll them on a paper towel to remove any surface moisture
        
        Measure the length and mass of the cylinders again
        
        Calculate percentage change
        
        Percentage change = (Change in value / Original value) * 100