EXAM
Genes - ANSWERS-The operon is a cluster of functionally related
_____ can be under coordinated by an on-off "switch"
Polymerase - ANSWERS-The repressor prevents gene transcription
by binding to the operator and blocking RNA _____
Corepressor - ANSWERS-A _____ is a molecule that cooperates with
repressor protein to switch an operon off
Promoter - ANSWERS-The regulatory switch is a segment of DNA
called an operator usually positioned within the _____
Repressors - ANSWERS-Some transcription factors function as
_____ inhibiting gene expression of a particular gene
Lysine - ANSWERS-In histone acetylation, acetyl groups are attached
to positively charged _____ in histone tails
Control - ANSWERS-_____ elements and the proteins they bind are
critical to the precise regulation of expression in different cells
, Histone Code - ANSWERS-The _____ _____ hypothesis proposes
that specific combinations of medications help determine chromatin
configuration and influence transcription
Activator - ANSWERS-An ______ is a protein that binds to an
enhancer and stimulates transcription of a gene
Enhancers - ANSWERS-Distal control elements, groups that of which
are called _____ may be far away from a gene or even located in an
intron
Transcription factors - ANSWERS-To initiate transcription,
eukaryotic RNA polymerase requires the assistance of proteins called
_____ _____
Translation - ANSWERS-MicroRNAs (miRNAs) are small single-
stranded RNA molecules that bind to mRNA. These degrade or block
its _____
Splicing - ANSWERS-An alternative to RNA _____ different mRNA
molecules are produced from the same primary transcript, depending
on which RNA segments are treated as exons and which as introns
Protosomes - ANSWERS-_____ are giant protein complexes that bind
protein molecules and degrade them