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(True/False) There is no redundancy in enzymes that catalyze histone modifications, meaning that an enzyme can only catalyze a reaction on a specific residue of a histone and not any other residues. A chromatin remodeler contains a PHD domain. Which would best describe how this remodeler activates transcription? A. binding to acetylated histones and ejecting the nucleosomes B. binding to methylated histones and sliding the nucleosomes to decrease the distance between them C. binding to acetylated histones and replacing H2A with H2A.Z D. binding to methylated histones and sliding the nucleosomes to increase the distance between them

(True/False) There is no redundancy in enzymes that catalyze histone modifications, meaning that an enzyme can only catalyze a reaction on a specific residue of a histone and not any other residues. A chromatin remodeler contains a PHD domain. Which would best describe how this remodeler activates transcription? A. binding to acetylated histones and ejecting the nucleosomes B. binding to methylated histones and sliding the nucleosomes to decrease the distance between them C. binding to acetylated histones and replacing H2A with H2A.Z D. binding to methylated histones and sliding the nucleosomes to increase the distance between them

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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(True/False) There is no redundancy in enzymes that catalyze histone modifications, meaning that an enzyme can only catalyze a reaction on a specific residue of a histone and not any other residues. A chromatin remodeler contains a PHD domain. Which would best describe how this remodeler activates transcription? A. binding to acetylated histones and ejecting the nucleosomes B. binding to methylated histones and sliding the nucleosomes to decrease the distance between them C. binding to acetylated histones and replacing H2A with H2A.Z D. binding to methylated histones and sliding the nucleosomes to increase the distance between them You are studying a developmental mutant in Drosophila. You are investigating a region that is under polycomb repression and notice that the embryos have aberrant H3K27me3 in a region adjacent to a region that normally has H3K27me3. All other areas are regulated normally. What is a likely explanation for the mutant? A. The flies have a defect causing increased heterochromatin formation B. The flies have a defect in a lysine demethylase that prevents them from removing H3K27me3 C. The flies have a defect in an insulator binding protein, such as CTCF D. None of the above
Transcribed Image Text:(True/False) There is no redundancy in enzymes that catalyze histone modifications, meaning that an enzyme can only catalyze a reaction on a specific residue of a histone and not any other residues. A chromatin remodeler contains a PHD domain. Which would best describe how this remodeler activates transcription? A. binding to acetylated histones and ejecting the nucleosomes B. binding to methylated histones and sliding the nucleosomes to decrease the distance between them C. binding to acetylated histones and replacing H2A with H2A.Z D. binding to methylated histones and sliding the nucleosomes to increase the distance between them You are studying a developmental mutant in Drosophila. You are investigating a region that is under polycomb repression and notice that the embryos have aberrant H3K27me3 in a region adjacent to a region that normally has H3K27me3. All other areas are regulated normally. What is a likely explanation for the mutant? A. The flies have a defect causing increased heterochromatin formation B. The flies have a defect in a lysine demethylase that prevents them from removing H3K27me3 C. The flies have a defect in an insulator binding protein, such as CTCF D. None of the above
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