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- Which region of chromatin is transcriptionally silent?a) Nucleoidb) Centromerec) Euchromatind) HeterochromatinLoosening the chromatin structure occurs because of Select one: a. Lysine methylation b. Lysine acetylation c. Lysine phosphorylation d. Lysine sumoylationSmall molecules binding to histone proteins also control gene expression by chromatin remodelling Group of answer choices No answer text provided. True No answer text provided. false
- Modifications of histone tails to gain access to a gene is known as ______. Chromatin modifications DNA methylation Post-transcriptional processing Post-translational modificationsMatch the type of chromatin modification with the most likely effect on gene expression near the modified region. Each answer will be used once. -Increased expression -decreased expression -may increase or decrease expression a)Histone acetylation b)Histone methylation c)CpG methylationEpigenetic marks regulate gene expression. Which epigenetic mark is NOT associated with positive gene expression? Histone acetylation Histone Methylation De-methylated DNA Methylated DNA
- Which of the following types of epigenetic changes may promote cancer?a. DNA methylationb. Covalent modification of histonesc. Chromatin remodelingd. All of the above_____ is the combination of a seat, elation, another modifications to the histones that allow for changes in DNA winding and unwinding a. Epigentics b. Histone code c. Heterochromatin d. Post translational modificationsEpigenetic changes in chromatin remodelling which selectively PREVENTS transcription Acetylation and phosphorylation of certain histone proteins Methylation Group of answer choices NEITHER 1 NOR 2 2 ONLY 1 AND 2 1 ONLY
- Chromatin remodeling is linked to epigenetics. Explain how this works and indicate the driving factors for this processWhich of the following is likely to be transcriptionally expressed? euchromatin and DNA with methyl groups euchromatin DNA with methyl groups DNA with acetylated histones euchromatin and DNA with acetylated histonesAn activated eukaryotic transcription factor looks for specific: