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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