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DSST Biochemistry 2

Subjects : dsst, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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