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45. Which is the factor(s) involved in the regulation of gene activity? Select one: O a. Transcriptional repressor/activator13. The ring is built onto ribose-5-phosphate of PRPP for its de-novo nucleotide biosynthesis, while the ring structure of th15. Which correctly describes the functional significance of the RNA structures? Select one: a. Local base-parings are the ke22. DNA can be visualized using ethidium bromide (EtBr) on polyacrylamide or agarose gels. That is because the fluorescence o

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Answer #1

Question 45: All of the above.

Genes can be regulated by transcriptional repressor/activator proteins, SAM binding to a riboswitch mRNA, and alterations in the mRNA conformations by SAM during transcription.

Transcriptional repressor/activator proteins regulate genes by binding to operator/enhancer sequences, respectively.

SAM regulates genes via methylation.

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