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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. Lagging strand


2. Breaks down lactase






3. A sequence of three nucleotide in DNA & RNA






4. Lipid component of endotoxin (Gram -)






5. Removes Crystal Violet color from the gram negative bacteria






6. Bonds between NAG and NAM






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






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






9. Bond between amino acids in a protein






10. Found the transforming factor to be DNA






11. Replicated in fragments known as Okazaki Fragments






12. NAD+ and a hydrogen - e- carrier






13. Acts as a mordant






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






15. Covalent bonds between amino acids






16. Place where repressor binds - where RNA polymerase binds






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






18. LPS layer of a Gram Negative bacterium






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






20. 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+






21. Transfer RNA that attaches to amino acids






22. Break down of molecules






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






24. Has 2 layers CW - CM






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






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






27. Comma shaped






28. Process of using mRNA to create proteins






29. Circular






30. Outermost layer of the Gram Positive bacterium






31. Where RNA polymerase starts






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






33. 'pair'






34. Series of amino acids held together by peptide bonds






35. Lactose binds to repressor and it releases from operator






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






37. Are Restriction Enzymes






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






39. Signals the start of DNA replication






40. Found the double helicle structure of DNA






41. Components of the CW linked by peptide bonds






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






43. Spiral






44. 2 - 3 carbon molecules with 2 phosphates






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






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






47. Gain of e-






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






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






50. How cells use energy stored in food and molecules to make ATP