Test your basic knowledge |

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. Purine adenine - ribose and 3 phosphates






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






3. The process of creating mRNA using DNA






4. Leading strand


5. Where RNA polymerase starts






6. Covalent bonds between amino acids






7. Breaks down lactase






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






9. Signals the start of DNA replication






10. Found one to one ratio between base pairs






11. Uncoils the DNA strand






12. Energy required






13. Removes Crystal Violet color from the gram negative bacteria






14. Monomers of proteins






15. 2 - 3 carbon molecules with 2 phosphates






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






17. Initiates transcription






18. Process of using mRNA to create proteins






19. Spontaneous - doesn't require energy






20. Has 2 layers CW - CM






21. 'chain'






22. Attraction






23. Components of the CW linked by peptide bonds






24. Stains gram negative and gram positive bacteria






25. Bonds between NAG & NAG or NAM & NAM






26. Spiral






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






28. Stains the LPS of the gram negative bacteria






29. Outermost layer of the Gram Positive bacterium






30. Polymer of carbohydrates joined together by glycosidic bonds






31. 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+






32. The last - ending codon that terminates the sequence






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






34. 'pair'






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






36. Are Restriction Enzymes






37. The empty space between the CW & the CM






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






39. Place where repressor binds - where RNA polymerase binds






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






41. Gain of e-






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






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






44. Construction site to build proteins from mRNA and tRNA






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






46. Lipid component of endotoxin (Gram -)






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






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






49. Circular






50. Membrane surrounding the cytoplasm