Biochemistry (280)

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South University *

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232

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Biology

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Nov 24, 2024

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Chapter 1 Biochemistry and the Unity of Life 282 37. How do promoters differ in efficiency? 38. What is the significance of the subunit? 39. How does RNA polymerase find the proper binding site? 40. What is the theory about how palindromic RNA polymerase transcription termination signals function? 41. What is a common feature of both protein-dependent and protein-independent termination signals in transcription? 42. How does the antibiotic rifamycin function mechanistically? 43. A σ subunit that is mutated such that the protein binds tightly to DNA with a 10-times-higher affinity than wild-type sequences will likely have what effect? 44. Describe how RNA is modified. 45. How does the addition of lactose to E. coli induce the expression of proteins important for lactose metabolism? 46. A mutation in the 3 end of mRNA leads to an increase in AT-rich regions. What is the likely outcome of this change? 47. What are the DNA components of a regulatory system?
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