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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. Attraction






2. Many amino acids bonded together with peptide bonds






3. Unzips the DNA double Helix






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






5. Outermost layer of the Gram Positive bacterium






6. Bonds between NAG & NAG or NAM & NAM






7. Loss of e-






8. Found the double helicle structure of DNA






9. Replicated in fragments known as Okazaki Fragments






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






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






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






13. Found DNA to be the genetic material in cells






14. Lactose binds to repressor and it releases from operator






15. Transfer RNA that attaches to amino acids






16. How strong a molecule/atom can pull e-






17. Has 2 layers CW - CM






18. Keeps the DNA strands separated






19. Polymer of carbohydrates joined together by glycosidic bonds






20. Is a code in which it is the same code forward as it is backwards - restriction sites






21. Found one to one ratio between base pairs






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






23. Released from a lipopolysaccharide in a Gram - bacterium






24. Leading strand

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25. Series of amino acids held together by peptide bonds






26. Construction site to build proteins from mRNA and tRNA






27. Where RNA polymerase starts






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






29. Replicated continuously






30. Stains gram negative and gram positive bacteria






31. Is an enzyme that cuts double-stranded or single stranded DNA at specific recognition sites






32. Lipid component of endotoxin (Gram -)






33. Build up of molecules






34. Protein that makes RNA primers and makes mRNA from DNA






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






36. Glyceraldyhyde 3 Phosphaet Dehydrogenase - phosphorolates and reduces NAD by adding 2e- and a H+






37. Location of transcription






38. Break down of molecules






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






40. Binds to promoter which stops promotion of lactose






41. Monomers of proteins






42. Lagging strand

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43. 2-layer permeable membrane that forms a continuous barrier around a cell






44. Are Restriction Enzymes






45. LPS layer of a Gram Negative bacterium






46. Cuts the introns out of mRNA






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






48. Process of breaking down glucose to pyruvate






49. Location of translation






50. A sequence of three nucleotide in DNA & RNA