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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 loving' (polar molecules) ie. Phosphate head






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






3. Circular






4. Components of the CW linked by peptide bonds






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






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






7. 'four'






8. Found the double helicle structure of DNA






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






10. Uncoils the DNA strand






11. 2 - 3 carbon molecules with 2 phosphates






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






13. Acts as a mordant






14. Coding regions on mRNA






15. Has 2 layers CW - CM






16. Released from a lipopolysaccharide in a Gram - bacterium






17. Purine adenine - ribose and 3 phosphates






18. Microbes; single celled microorganisms






19. 'pair'






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






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






22. Removes Crystal Violet color from the gram negative bacteria






23. Binds to promoter which stops promotion of lactose






24. Gain of e-






25. Found one to one ratio between base pairs






26. Place where repressor binds - where RNA polymerase binds






27. Series of amino acids held together by peptide bonds






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






29. Location of translation






30. Found DNA to be the genetic material in cells






31. Signals the start of DNA replication






32. Lays down DNA nucleotides






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






34. Lipid component of endotoxin (Gram -)






35. Spontaneous - doesn't require energy






36. Monomers of proteins






37. Location of transcription






38. Polymer of carbohydrates joined together by glycosidic bonds






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






40. Unzips the DNA double Helix






41. Many amino acids bonded together with peptide bonds






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






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






44. Has 3 layers OM - CW - CM






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






46. That doesn't contain a nucleus or membrane bound organelles (small cell)






47. Replicated in fragments known as Okazaki Fragments






48. NAD+ and a hydrogen - e- carrier






49. Lactose binds to repressor and it releases from operator






50. Lagging strand