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6. How do you calculate magnification

  • Size of image + actual size of object
  • Size of image x actual size of object
  • Size of image ÷ actual size of object
  • Actual size of object ÷ size of image

7. Name the two purines

  • Adenine and uracil
  • Adenine and thymine
  • Adenine and guanine
  • Adenine and cytosine

8. What is the correct test for starch

  • Iodine test
  • Benedicts test
  • Emulsion test
  • Biuret test

9. What is osmosis

  • Movement of water across a semipermeable membrane using energy
  • Movement of water from an area of high water potential to low water potential
  • Movement of gas from low concentration to High concentration with the use of energy
  • Movement of gas from High concentration to low concentration

10. What feature of the cytoskeleton is responsible for spindle fibres in cell division

  • Microtubules
  • Microfilaments
  • Intermediate fibres

11. What protein structure are alpha helices and beta pleated sheets and

  • Tertiary
  • Secondary
  • Primary
  • Quaternary

12. Give an example of a globular protein

  • Collagen
  • Insulin
  • Elastin
  • Keratin

13. What is the maximum magnification of an electron microscope

  • 2500
  • 1 million
  • 500000
  • 200000

14. State the structure of a nucleotide

  • Glucose backbone with nitrogenous base pair
  • Carbohydrate backbone with nitrogenous base pair
  • Sugar phosphate backbone with nitrogenous base pair
  • Sugar phosphate backbone

15. What elements make up carbohydrates

  • Carbon hydrogen oxygen phosphorus
  • Carbon hydrogen oxygen
  • Carbon hydrogen oxygen nitrogen
  • Carbon hydrogen oxygen nitrogen sulphur

16. What site does a non competitive inhibitor bind to

  • Glycoprotein
  • Allosteric site
  • Active site

17. What causes the double helix shape in DNA

  • Hydrogen bonding between base pairs
  • Covalent bonding between base pairs
  • Ionic bonding between sugar phosphate backbones

18. What is the function of the Golgi apparatus in Protein production

  • Secrete proteins
  • Digest proteins
  • Modify proteins
  • Transport proteins

19. What group of enzymes digests proteins

  • Proteases
  • Carbohydrases
  • Lytic enzymes