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






2. Binds to promoter which stops promotion of lactose






3. Bond between amino acids in a protein






4. Purine adenine - ribose and 3 phosphates






5. Energy required






6. Monomers of proteins






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






8. Gain of e-






9. A sequence of three nucleotide in DNA & RNA






10. Components of the CW linked by peptide bonds






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






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






13. Replicated continuously






14. Bonds between NAG & NAG or NAM & NAM






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






16. Not spontaneous - requires energy






17. Build up of molecules






18. Nicotinamide Adenine Dinuecleotide






19. Okazaki fragments are than linke






20. Series of amino acids held together by peptide bonds






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






22. The empty space between the CW & the CM






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






24. Lipid component of endotoxin (Gram -)






25. Loss of e-






26. Comma shaped






27. Found DNA to be the genetic material in cells






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






29. Break down of molecules






30. Are Restriction Enzymes






31. Place where repressor binds - where RNA polymerase binds






32. Microbes; single celled microorganisms






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






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






35. Has 2 layers CW - CM






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






37. Rod shaped






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






39. Polymer of carbohydrates joined together by glycosidic bonds






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






41. Process of using mRNA to create proteins






42. 'pair'






43. Location of translation






44. Leading strand

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






46. Non-coding regions on mRNA






47. Found the double helicle structure of DNA






48. Stains gram negative and gram positive bacteria






49. Spiral






50. The last - ending codon that terminates the sequence