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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. Covalent bonds between amino acids






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






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






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






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






6. The empty space between the CW & the CM






7. Process of using mRNA to create proteins






8. Circular






9. Bonds between NAG and NAM






10. Process of breaking down glucose to pyruvate






11. A sequence of three nucleotide in DNA & RNA






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






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






14. NAD+ and a hydrogen - e- carrier






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






16. Bonds between NAG & NAG or NAM & NAM






17. 2-layer permeable membrane that forms a continuous barrier around a cell






18. A set of codons that terminates the sequence (stop codon)






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






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






21. Attraction






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






23. Unzips the DNA double Helix






24. Transfer RNA that attaches to amino acids






25. 'four'






26. Keeps the DNA strands separated






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






28. Released from a lipopolysaccharide in a Gram - bacterium






29. Nicotinamide Adenine Dinuecleotide






30. Where RNA polymerase starts






31. Lagging strand


32. Construction site to build proteins from mRNA and tRNA






33. Build up of molecules






34. Series of amino acids held together by peptide bonds






35. Bond between amino acids in a protein






36. Microbes; single celled microorganisms






37. Non-coding regions on mRNA






38. Has 3 layers OM - CW - CM






39. Binds to promoter which stops promotion of lactose






40. Lactose binds to repressor and it releases from operator






41. Protein channel






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






43. Spontaneous - doesn't require energy






44. Gain of e-






45. Removes Crystal Violet color from the gram negative bacteria






46. Membrane surrounding the cytoplasm






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






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






49. Cuts the introns out of mRNA






50. 2 - 3 carbon molecules with 2 phosphates