EXAM 4.docx - What would happen if there were a mutation in...

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What would happen if there were a mutation in the operator of the trp operon? the trp operon would continuously express the genes What part of the ribosome is important in catalyzing peptide bonds? The rRNA Enhancers located hundreds of bases upstream of a gene can be brought to the promoter by _________. DNA bending proteins In eukaryotes, where would a protective modification be found on mRNA? on both the 5' end and the 3' end A gene is made up of three exons (numbered consecutively) with two introns (intron 1 between exons 1 and 2 and intron 2 between exons 2 and 3). What would happen if there were a mutation at the 3’ splice site of intron 1? mRNA wiat all three exons along with intron 1 The portions of the mature mRNA where RNA-binding proteins can attach in order to change RNA stability are known as Untranslated regions _________ is the first protein to bind to mRNA to being initiation of translation. eIF-2 If every cell in the body gets the same DNA, how do the cells of an embryo make different structures and take on different roles? (Select all that apply.) Different transcription factors are active in different cells Genes are spiced diffently in in different cells Translation is regulated so that different cells may make more of certain proteins Overexpression of miRNAs can lead to a decrease of protein expression associated with some forms of cancer. What could a drug do to counter this effect?
Decrease expression of miRNA Epigenetics refers to a special kind of hereditary mechanism. Epigenetic changes do not change the DNA nucleotide sequence, yet their effect on gene expression can last for several generations.

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