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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. Unzips the DNA double Helix






2. Transfer RNA that attaches to amino acids






3. A sequence of three nucleotide in DNA & RNA






4. Build up of molecules






5. Location of translation






6. Break down of molecules






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






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






9. It is the two single stranded regions of DNA that is being replicated






10. Has 2 layers CW - CM






11. Energy required






12. 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+






13. Leading strand


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






15. Bond between amino acids in a protein






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






17. Process of using mRNA to create proteins






18. Many amino acids bonded together with peptide bonds






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






20. Place where repressor binds - where RNA polymerase binds






21. Polymer of carbohydrates joined together by glycosidic bonds






22. Lays down DNA nucleotides






23. Found the transforming factor to be DNA






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






25. Where RNA polymerase starts






26. Uncoils the DNA strand






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






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






29. Has 3 layers OM - CW - CM






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






31. Outermost layer of the Gram Positive bacterium






32. Loss of e-






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






34. 'pair'






35. Nicotinamide Adenine Dinuecleotide






36. The last - ending codon that terminates the sequence






37. How protein synthesis is regulated prokaryoticly on plasmid of the cell






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






39. Purine adenine - ribose and 3 phosphates






40. Circular






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






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






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






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






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






46. Acts as a mordant






47. Series of amino acids held together by peptide bonds






48. Keeps the DNA strands separated






49. Released from a lipopolysaccharide in a Gram - bacterium






50. Gain of e-