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






2. Components of the CW linked by peptide bonds






3. Gain of e-






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






5. Process of breaking down glucose to pyruvate






6. Many amino acids bonded together with peptide bonds






7. Cuts the introns out of mRNA






8. Nicotinamide Adenine Dinuecleotide






9. Construction site to build proteins from mRNA and tRNA






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






11. 'chain'






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






13. Lays down DNA nucleotides






14. Covalent bonds between amino acids






15. Attraction






16. Place where repressor binds - where RNA polymerase binds






17. Lays down RNA Primase to indicate the start of replication






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






19. Spontaneous - doesn't require energy






20. Initiates transcription






21. Stains gram negative and gram positive bacteria






22. Replicated continuously






23. Bonds between NAG & NAG or NAM & NAM






24. Polymer of carbohydrates joined together by glycosidic bonds






25. The last - ending codon that terminates the sequence






26. Okazaki fragments are than linke






27. Uncoils the DNA strand






28. Circular






29. 'four'






30. Removes Crystal Violet color from the gram negative bacteria






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






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






33. Lipid component of endotoxin (Gram -)






34. 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+






35. Lactose binds to repressor and it releases from operator






36. Outermost layer of the Gram Positive bacterium






37. Transfer RNA that attaches to amino acids






38. Loss of e-






39. Microbes; single celled microorganisms






40. Binds to promoter which stops promotion of lactose






41. Process of using mRNA to create proteins






42. Found the double helicle structure of DNA






43. Bonds between NAG and NAM






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






45. The empty space between the CW & the CM






46. Location of transcription






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






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






49. A sequence of three nucleotide in DNA & RNA






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