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DSST Biochemistry 2

Subjects : dsst, science
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. Circular

2. Unzips the DNA double Helix

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

4. Bonds between NAG & NAG or NAM & NAM

5. Where RNA polymerase starts

6. Breaks down lactase

7. Location of transcription

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

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

10. Components of the CW linked by peptide bonds

11. Cuts the introns out of mRNA

12. Lays down DNA nucleotides

13. Spontaneous - doesn't require energy

14. Non-coding regions on mRNA

15. Lactose binds to repressor and it releases from operator

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

17. The last - ending codon that terminates the sequence

18. Construction site to build proteins from mRNA and tRNA

19. Nicotinamide Adenine Dinuecleotide

20. Covalent bonds between amino acids

21. The empty space between the CW & the CM

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

23. Binds to promoter which stops promotion of lactose

24. Series of amino acids held together by peptide bonds

25. Protein channel

26. Stains the LPS of the gram negative bacteria

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

28. Found the transforming factor to be DNA

29. Stains gram negative and gram positive bacteria

30. Bond between amino acids in a protein

31. Process of using mRNA to create proteins

32. Initiates transcription

33. A sequence of three nucleotide in DNA & RNA

34. Comma shaped

35. 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+

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

37. Place where repressor binds - where RNA polymerase binds

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

39. Membrane surrounding the cytoplasm

40. 2 - 3 carbon molecules with 2 phosphates

41. Acts as a mordant

42. Energy required

43. 'four'

44. The process of creating mRNA using DNA

45. Released from a lipopolysaccharide in a Gram - bacterium

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

47. Loss of e-

48. Not spontaneous - requires energy

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

50. Purine adenine - ribose and 3 phosphates