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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. Is an enzyme that glues the sticky or the blunt ends to join the strands






2. Spiral






3. Break down of molecules






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






5. Keeps the DNA strands separated






6. Stains gram negative and gram positive bacteria






7. Microbes; single celled microorganisms






8. Bonds between NAG and NAM






9. Process of using mRNA to create proteins






10. Series of amino acids held together by peptide bonds






11. NAD+ and a hydrogen - e- carrier






12. Cuts the introns out of mRNA






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






14. The empty space between the CW & the CM






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






16. Protein channel






17. Leading strand


18. Comma shaped






19. Are Restriction Enzymes






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






21. Removes Crystal Violet color from the gram negative bacteria






22. Lipid component of endotoxin (Gram -)






23. Found DNA to be the genetic material in cells






24. Where RNA polymerase starts






25. Bond between amino acids in a protein






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






27. 'cluster'






28. The last - ending codon that terminates the sequence






29. Gain of e-






30. Polymer of carbohydrates joined together by glycosidic bonds






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






32. Released from a lipopolysaccharide in a Gram - bacterium






33. Cell that contains a nucleus and membrane bound organelles (big cell)






34. Signals the start of DNA replication






35. Has 3 layers OM - CW - CM






36. Components of the CW linked by peptide bonds






37. 'chain'






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






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






40. Non-coding regions on mRNA






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






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






43. Lays down DNA nucleotides






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






45. Covalent bonds between amino acids






46. Acts as a mordant






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






48. Nicotinamide Adenine Dinuecleotide






49. Transfer RNA that attaches to amino acids






50. Not spontaneous - requires energy