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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. A sequence of three nucleotide in DNA & RNA






2. 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+






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






4. Has 2 layers CW - CM






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






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






7. 'pair'






8. 'four'






9. Construction site to build proteins from mRNA and tRNA






10. Place where repressor binds - where RNA polymerase binds






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






12. One of the four bases in mRNA (replaces thymine)






13. Outermost layer of the Gram Positive bacterium






14. 'cluster'






15. Coding regions on mRNA






16. Lagging strand


17. Polymer of carbohydrates joined together by glycosidic bonds






18. Covalent bonds between amino acids






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






20. Non polar molecule component of the CM (the 'tail')






21. Removes Crystal Violet color from the gram negative bacteria






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






23. Initiates transcription






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






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






26. 2 - 3 carbon molecules with 2 phosphates






27. Okazaki fragments are than linke






28. Cuts the introns out of mRNA






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






30. Signals the start of DNA replication






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






32. Uncoils the DNA strand






33. Found the double helicle structure of DNA






34. Loss of e-






35. Transfer RNA that attaches to amino acids






36. Gain of e-






37. Lipid component of endotoxin (Gram -)






38. Circular






39. The codon on tRNA that matches up with and attaches to a codon on mRNA






40. Rod shaped






41. Location of translation






42. Stains the LPS of the gram negative bacteria






43. Replicated continuously






44. Purine adenine - ribose and 3 phosphates






45. Monomers of proteins






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






47. Process of using mRNA to create proteins






48. Build up of molecules






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






50. Lays down DNA nucleotides