MCB Exam 2 - RATs (5-9) Questions with
100% Correct Answers
in euk cells the factors that are involved in the most mRNAs are known as -
general transcription factors
the first phosphorylation event affecting the CTD of the large subunit of ___
is mediated by a kinase activity assoc. to ___ - R...
the helicase activity that allows transcription by RNA pol II to start is
mediated by - ✔✔TFIIH
evolutionarily speaking the existence in euk of three diff polymerases is
most likely the result of - ✔✔a selective pressure to ensure high expression
of a specific set of genes while allowing tight control of others
phosphorylation of the CTD is a key regulatory event during transcriptional
initiation by RNA pol I - ✔✔False
in euk cells transcription of the genes coding for the large ribosomal RNAs
yields a large 45S pre-rRNA that is later on processed to produce the 18S,
5.8S, and 5S rRNAs - ✔✔false
histone deacetylases could be argued to typically ___ gene expression -
✔✔decrease
the essential sequence that drives the recruitment of general transcription
factors thus allowing transcription to occur is known as the - ✔✔Core
promoter (?)
these are sequences that divide chromosomes into independent domains
and prevent enhancers form acting on promoters located on a different
domain - ✔✔insulators
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