Histone modifications - Samenvattingen, Aantekeningen en Examens

Chromosome Structure Test Questions with Answers Where is DNA methylated? - Answer-5' of deoxycytidine Describe the movement of chromatin within the nucleus. - Answer-Interconverts between euchromatin and heterochromatin quickly, but whole chromosomes do not move much. Specific genes are associated with specific nuclear compartments. CLINICAL APPLICATION: give an overview of how FISH is used in clinical medicine. Acronym? - Answer-Fluorescence in situ hybridization. Labeled DNA probe ...

©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 1/31 NU 318 Genetics- Exam 3 Study Guide with Complete Solutions Define Epigenetics - Ans:-the study of environmental influences on gene expression that occur WITHOUT a DNA change - they are chemical or environmental modifications ex: parental diet and environmental toxins What are the components of the epigenome? - Ans:-1. methylation 2. micro RNA 3. histone modification Define methylation - A...

Allopurinol is an inhibitor of Xanthine Oxidase. Addition of this compound will result in a decrease in what compound? correct answer: Uric Acid DNA replication occurs during which phase of the cell cycle? correct answer: S phase The affinity for DNA and histones within a chromosome can be increased by which of the following histone modifications? correct answer: Deaceytlation DNA replication on both the leading and the lagging strand proceeds in the 5' to 3' direction. The remaini...

NR 507 MIDTERM EXAM ALL EXAMS COMBINED AND STUDY GUIDE LATEST 5 NEW VERSIONS VERIFIED QUESTIONS AND ANSWERS NRI507IAdvancedIPathophysiologyIMidtermIExam ScoreIforIthisIquiz:I118IoutIofI120 I Question 1 2 / 2 pts TheIlungIisIinnervatedIbyItheIparasympatheticInervousIsystemIviaIwhichInerve? Vagus Phrenic Brachial Pectoral FibersIofItheIparasympatheticIdivisionIofItheIautonomicInervousIsystemI(ANS)Itravel onlyI IinItheIvagusInerveItoItheIlung. Question 2 2 / 2 pts WhatIisItheIa...

T/F: DNA looping is important for RNA polymerase activity in the presence of enhancer elements. - answer-True T/F: Genome editing has been greatly facilitated by the adaptation of the bacterial CRISPR-Cas9 system. - answer-True T/F: Transposase is required for non-LTR retrotransposon movement. - answer-false-transposase is required for transposon movement. non-LTR retrotransposon movement requires reverse transcriptase T/F: LTR and non-LTR retrotransposons require reverse transcriptase ...

Genetics Exam 3 Practice Test 50 Questions with Verified Answers Gene conversion results from A. Discontinuous replication B. Photoreactivation C. Mismatch repair D. Gap Repair E. C and D - CORRECT ANSWER E. C and D The picture below is two Holliday junctions in a pair of DNA molecules undergoing recombination Breakage and rejoining of the strands indicated by the arrows () and () results in crossover. A. 1 and 2 B. 2 and 3 C. 3 and 4 - CORRECT ANSWER B. 2 and 3 In eukaryoti...

RTK in NGF One ligand binds 2 receptors causing dimerization + phosphorylation at tyrosine residues. Monomers phosphorylate each other + can activate effectors downstream. RTK in Insulin Receptors 2 ligands each bind receptors on the alpha side, causing conformational change to each alpha-beta pair. The beta subunits phosphorylate each other and can activate effectors downstream. Female Sexual Differentiation 1. Ovaries develop from cortex while medulla regresses 2. Wolffian du...

NR507 2023 Midterm Exam Questions with Correct Answers Epigenetics - ANSWER heritable alterations that are not due to changes in DNA sequence epigenetic modifications, or "tags," such as DNA methylation and histone modification - ANSWER alter DNA accessibility and chromatin structure, thereby regulating patterns of gene expression. histone modifications - ANSWER A histone modification is a covalent post-translational modification (PTM) to histone proteins whi...

Metabolic processes can be turned "on" and "off" by chemical modifcation. Which chemical modification do we associate with changing the activity of an enzyme in a transient/non-permanent manner? Phosphorylation After transcription, nuclear RNA is capped, polyadenylated, spliced. After successful splicing, proteins are added to the mature mRNA at the exon junction complex and then transported to the cytoplasm. Which of the following is a NOT a reason why these modifications are add...

Three properties of cancer: - Answer-1) uncontrolled cell division 2) invasion of surrounding tissue 3)metastasis (spread to other locations in the body via lymph or blood) Eight hallmark biological properties of malignant tumor cells: - Answer-1)Acquisition of self-sufficiency in growth signals 2)Loss of sensitivity to anti-growth signals 3)Loss of capacity for apoptosis (cell suicide) 4)Loss of capacity for senescence (aging) 5)Acquisition of sustained angiogenesis (blood vessel growt...