OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Answer d. Control of gene expression in eukaryotic cells occurs at epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels. Post-translational control refers to the: regulation of gene expression after transcription.
Detailed explanation-2: -Under the effect of transcription factors, the various cells of the body can function differently though they have the same genome. Transcription factors bind to one or more sequence sites, which are called transcription factor binding sites (TFBSs), attaching to specific DNA sequences of the genes they regulate [2].
Detailed explanation-3: -The activity of a transcription factor is often regulated by (de) phosphorylation, which may affect different functions, e.g. nuclear localization DNA binding and trans-activation. Ligand binding is another mode of transcription-factor activation.