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6. The skin contains a fibrous protein called...

  • keratin
  • lysozyme
  • cytokine
  • interferon

7. Enzymes are

  • globular proteins that decrease activation energy
  • fibrous proteins that decrease activation energy
  • fibrous proteins that increase activation energy
  • globular proteins that increase activation energy

8. The region of the chloroplast that would be involved in the fixation of carbon dioxide is...

  • stroma
  • crista
  • granum
  • matrix

9. What is the most likely product of the digestion of cellulose by bacteria.

  • glycerol
  • glucose
  • fatty acids
  • amino acids

10. What is the name of the organism that causes TB?

  • Microbacterium tuberculosis
  • Mycobacterium tuberculosis
  • Macrobacterium tuberculosis
  • Monobacterium tuberculosis

11. Enzymes digest proteins into fragments using

  • hydrolysis reactions
  • polymerisation reactions
  • condensation reactions
  • esterification reactions

12. The nucleic acid found in viruses is

  • DNA or RNA
  • DNA
  • RNA
  • DNA and RNA

13. The enzyme involved in the reaction RuBP + CO2 -> 2 x GALP is...

  • RUBISCO
  • transcriptase
  • endonuclease
  • phosphorylase

14. Which factor might influence the rate of progress of rigor mortis in a muscle immediately after death?

  • Presence of drugs in the body
  • Presence of egg laying insects
  • Degree of decomposition of the muscle
  • Oxygen concentration of the atmosphere

15. What is the name of the chemical that T helper cells produce to activate the T killer cells?

  • cytosine
  • cytokine
  • cysteine
  • chromatin

16. The units for net primary productivity are...

  • kJ m-2 year-1
  • kg
  • kJ m-1
  • kg m-1 year-1

17. Which part of the skin that forms a physical barrier against infection by pathogenic bacteria?

  • Epidermis
  • Erector pili
  • Malpighian layer
  • Sebaceous gland

18. What is the term used to describe the type of chemical reaction involved in the digestion of cellulose by enzymes?

  • photolysis
  • autolysis
  • hydrolysis
  • haemolysis

19. The products of the light-dependent reactions that are used in the light-independent reactions are reduced NADP and...

  • DNA
  • RuBP
  • ATP
  • GALP

20. Genetic material in bacteria is

  • double stranded RNA
  • single stranded RNA
  • double stranded DNA
  • single stranded DNA