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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. Uncoils the DNA strand






2. The first - leading codon in a sequence of codons (AUG)






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






4. A set of codons that terminates the sequence (stop codon)






5. Series of amino acids held together by peptide bonds






6. Okazaki fragments are than linke






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






8. 'four'






9. Lactose binds to repressor and it releases from operator






10. Acts as a mordant






11. Phosphate is added to a molecule to make it unstable. Molecule more easily broken now.






12. Removes Crystal Violet color from the gram negative bacteria






13. Polymer of carbohydrates joined together by glycosidic bonds






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






15. Membrane surrounding the cytoplasm






16. Has 2 layers CW - CM






17. Break down of molecules






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






19. Where the double stranded end came a part and the complimentary start join






20. Cuts the introns out of mRNA






21. Stains the Lipid A of gram positive bacteria cell wall






22. 'cluster'






23. The process of creating mRNA using DNA






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






25. 2 - 3 carbon molecules with 2 phosphates






26. Microbes; single celled microorganisms






27. Construction site to build proteins from mRNA and tRNA






28. Nicotinamide Adenine Dinuecleotide






29. Bonds between NAG & NAG or NAM & NAM






30. Outermost layer of the Gram Positive bacterium






31. Location of translation






32. Leading strand






33. The last - ending codon that terminates the sequence






34. Protein channel






35. Attraction






36. Released from a lipopolysaccharide in a Gram - bacterium






37. Loss of e-






38. Lagging strand






39. Found the transforming factor to be DNA






40. Keeps the DNA strands separated






41. Lays down DNA nucleotides






42. Gain of e-






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






44. Rod shaped






45. Replicated continuously






46. LPS layer of a Gram Negative bacterium






47. Spontaneous - doesn't require energy






48. Lipid component of endotoxin (Gram -)






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






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