What is a transcription factor or transcription regulator? A protein required for mRNA nuclear export A protein that regulates DNA synthesis A protein that interacts with mRNA and increases translation A protein that binds to the DNA origin of replication A protein that binds to a cis-regulatory DNA sequence and affects the probability of gene transcription

The promoter: A) Is an RNA sequence necessary for activating the transcription of a gene B) Is an RNA sequence necessary for activating translation C) Is a DNA sequence necessary for regulating the transcription of a gene D) Is the site of initiation of gene transcription E) Is a protein factor necessary for activating gene transcription

What is the role of transcription factors in gene expression? How might general vs. specific factors function in gene expression?

Which of the following best describes a promoter?Group of answer choicesA regulatory protein that accelerates mRNA turnoverAn element that promotes termination of transcriptionAn extracellular inducer that controls gene expressionA DNA sequence to which RNA polymerase may bind

What is the role of transcription factors?Break apart old mRNA polymersInitiate gene expressionControl the modification of proteinsAdd a “cap” and “tail” to mRNA

Regulatory proteins can control the initiation of transcription by A. Binding van die DNA in 'n aktiewe toestand om transkripsie te inhibeer / Binding the DNA in an active state to inhibit transcription B. Binding van die DNA in die teenwoordigheid van 'n induseerder molekule om transkripsie toe te laat / Binding the DNA in the presence of an inducer molecule to allow transcription C. Bind die DNA om transkripsie te bevorder tensy 'n inhibeerder teenwoordig is / Binding the DNA to promote transcription unless an inhibitor is present D. Al die bogenoemde / All of the above