1. PROTEIN SYNTHESIS Made with copyright free images from Wikimedia

3. The sequence of amino acids is important

4. The sequence of amino acids is important

18. mRNA leaves the nucleus via a nuclear pore

19. mRNA is edited by splicing

27. Translation

29. Translation

31. Translation

33. Translation

35. Translation

37. SUMMARY SUMMARY

38. Exam Questions

39. More likely to get this

40. Sequence of bases is the code ; DNA strands separate /Hydrogen bonds break ; producing mRNA/transcription (linked to mRNA production) ; role of RNA polymerase ; complementary base pairing ; mRNA attaches to ribosome/RER ; tRNA bring amino acid ; anticodons of tRNA complementary to codons on mRNA ; amino acids join by peptide bonds/condensation reaction ; Than this

41. Features of the Genetic Code

45. Control: Promoters and Transcription factors A promoter is a region of DNA that aids the transcription of a gene. Promoters are typically located near the genes they regulate, on the same strand and upstream a transcription factor is a protein that binds to a promoter region and thereby initiates the process of transcription. It does this by facilitating the binding of RNA polymerase.

46. Control: Promoters and Transcription factors

47. Control: Promoters and Transcription factors

48. Control: The example you have to learn - Effect of oestrogen on transcription Oestrogens : a group of steroid hormones – roles include development of secondary sexual characteristics and are involved in the regulation of the oestrus cycle.

49. Control: The example you have to learn - Effect of oestrogen on transcription Oestrogen enters the cell Oestrogen binds to receptor molecules in the cytoplasm

50. Control: The example you have to learn - Effect of oestrogen on transcription And promote the transcription of these genes They enter the nucleus & bind to promoter regions The oestrogen-receptor complexes act as transcription factors