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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. Uncoils the DNA strand






2. 'four'






3. Process of breaking down glucose to pyruvate






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






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






6. 'cluster'






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






8. Found DNA to be the genetic material in cells






9. Outermost layer of the Gram Positive bacterium






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






11. Lipid component of endotoxin (Gram -)






12. Process of using mRNA to create proteins






13. Messenger RNA that leaves the nucleus with the genetic code for a protein






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






15. Bonds between NAG & NAG or NAM & NAM






16. The last - ending codon that terminates the sequence






17. Stains the LPS of the gram negative bacteria






18. Signals the start of DNA replication






19. 2 - 3 carbon molecules with 2 phosphates






20. Construction site to build proteins from mRNA and tRNA






21. Bonds between NAG and NAM






22. Lagging strand


23. Circular






24. LPS layer of a Gram Negative bacterium






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






26. Series of amino acids held together by peptide bonds






27. Covalent bonds between amino acids






28. Okazaki fragments are than linke






29. Found one to one ratio between base pairs






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






31. Place where repressor binds - where RNA polymerase binds






32. Lays down DNA nucleotides






33. Where RNA polymerase starts






34. Nicotinamide Adenine Dinuecleotide






35. Unzips the DNA double Helix






36. Replicated continuously






37. Binds to promoter which stops promotion of lactose






38. Has 2 layers CW - CM






39. Gain of e-






40. Acts as a mordant






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






42. Purine adenine - ribose and 3 phosphates






43. Location of transcription






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






45. 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+






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






47. Not spontaneous - requires energy






48. The process of creating mRNA using DNA






49. Replicated in fragments known as Okazaki Fragments






50. Microbes; single celled microorganisms