Biology Revision AS Unit 2

Card Set Information

Biology Revision AS Unit 2
2010-11-19 12:56:59
Biology Revision AS Unit OCR

Revision for January Resit biology exam.
Show Answers:

  1. Biological Molecules
    Biochemistry and Metabolism
    ( Click to continue )
  2. Name 6 Chemical groups:
    CLUE- All organisms are made up of thousands of different molecules, in order to survive an organism must be able to make, or take in the molecules required.
    • Carbohydrates
    • Proteins
    • Lipids/Fats
    • Vitamins and minerals
    • Nucleic acids
    • Water
  3. What is the role of carbohydrates within an organism?
    • Energy storage
    • And sometimes structure
  4. Name 5 roles of proteins within an organism?
    • Structure
    • Transport ( Membranes )
    • Enzymes
    • Antibodies
    • Hormones
  5. Name 5 roles of lipids within an organism?
    • Membranes
    • Energy supply
    • Thermal insulation
    • Protective layers/padding
    • Electrical insulation in neurones (Myelin sheath)
  6. What is the role of vitamins and minerals within an organism?
    • They form some parts of larger molecules and take part in some metabolic reactions.
    • Some act as Co-enzymes or enzyme activators.
  7. What is the role of Nucleic acids within an organism?
    • INFORMATION molecules
    • E.g DNA
    • Carry the instructions for life!
  8. What is the role of water within an organism?
    • It takes part in many reactions
    • Helps support plants
    • It is a solvent = a medium for most metabolic reactions
  9. What is a risk factor?
    Something that increases your chance of developing a particular disease.
  10. The KEY biological molecules are:
    • Carbs
    • Lipids/ Fats
    • Proteins
    • Nucleic acids
  11. Name the main chemical elements found in there molecules...
    • Carbon
    • Hydrogen
    • Oxygen
    • Nitrogen