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DSST Biochemistry 2

Subjects : dsst, science
  • Answer 50 questions in 15 minutes.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Outermost layer of the Gram Positive bacterium

2. Spontaneous - doesn't require energy

3. 'cluster'

4. Stop free radicals from damaging cells - helps O trap e-

5. Protein channel

6. Has 2 layers CW - CM

7. Process of breaking down glucose to pyruvate

8. Stains the LPS of the gram negative bacteria

9. Lactose binds to repressor and it releases from operator

10. Cell that contains a nucleus and membrane bound organelles (big cell)

11. Murein; consists of sugars & amino acids that make a mesh-like layer outside the CW

12. Has 3 layers OM - CW - CM

13. It is the two single stranded regions of DNA that is being replicated

14. 2-layer permeable membrane that forms a continuous barrier around a cell

15. 'four'

16. Found the double helicle structure of DNA

17. Polymer of carbohydrates joined together by glycosidic bonds

18. Bonds between NAG and NAM

19. Bond between amino acids in a protein

20. Chains of molecules attached to the CW of a Gram + bacterium

21. Messenger RNA that leaves the nucleus with the genetic code for a protein

22. Bacteria cell that contains: OM - CW - periplamic space - & CM

23. 'water fearing' (non polar molecules) ie. Lipid tail

24. Gain of e-

25. Break down of molecules

26. Attraction

27. Polar molecule component of the CM (the 'head')

28. Makes a repressor - binds to promoter/operator to stop RNA polymerase

29. 'water loving' (polar molecules) ie. Phosphate head

30. Energy required

31. Bonds between NAG & NAG or NAM & NAM

32. Acts as a mordant

33. The chemical process in which glucose is broken down into two parts

34. Found one to one ratio between base pairs

35. Series of amino acids held together by peptide bonds

36. Replicated continuously

37. Spiral

38. Bacteria cell that contains: CW - periplasmic space - & CM

39. (LPS); lipids and polysaccharides linked together by covalent bonds

40. Monomers of proteins

41. That doesn't contain a nucleus or membrane bound organelles (small cell)

42. Removes Crystal Violet color from the gram negative bacteria

43. 'chain'

44. Loss of e-

45. Place where repressor binds - where RNA polymerase binds

46. Found the transforming factor to be DNA

47. 2 phosphates attached to glucose forming a 6 carbon compound & 2Pi (1 phosphate glucose) - ATP becomes ADP - done twice to make a 1 -6 glucose - phosphorolates and makes NAD+

48. Are Restriction Enzymes

49. 'pair'

50. Leading strand