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Gene expression

Controlling gene expression

QuestionAnswer
What kind of organisms have operon? bacteria
What kind of cells use transcription factors? eukaryotic
What does the repressor bind to in the lac operon? operator DNA
What does the RNA polymerase bind to? promoter DNA
What process does the RNA polymerase do? transcription
What helps the RNA polymerase bind to the promoter to do transcripton? transcription factors
What is added to the primary transcript to allow it attach to the ribosome? 5' GTP cap
What is added to the primary transcript to allow it to escape from the nucleus? 3' poly A tail
What is removed from the primary transcript/ introns
What are the pieces that are reunited to make the mRNA called? exons
What is the RNA called before it is modified by post transcriptional processes? primary transcript
After adding the 3' poly A tail, 5' GTP cap, and the introns being removed, what is the primary transcript then called? mRNA
Where are the introns removed? nucleus
Why is gene expression in need of control? We can't be making all of our proteins all of the time or it would be wasteful and it would cause developmental problems.
What is the inducer in the lac operon? lactose sugar
What is the product of the lac operon? lactase enzyme
What is the protein that binds to the operator? Repressor
What type of macromolecule are the promoter, operator, and primary transcript? All are nucleotides with operator and promoter being DNA while the primary transcript is RNA.
Created by: whamesjr
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