Methylation Study guides, Class notes & Summaries
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USLME – BIOCHEMISTRY EXAM 2024 WITH 100% ACCURATE SOLUTIONS
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Histones are rich in what AAs? - ANSWER ☑☑Lysine and arginine (both + charge) 
 
When does histone synthesis occur? - ANSWER ☑☑S phase (along with DNA getting synthesized) 
 
Heterochromatin is _________, euchromatin is _________ - ANSWER ☑☑Inactive/condensed; active/accessible 
 
What allows mismatch repair enzymes to distinguish between old and new DNA strands in prokaryotes? - ANSWER ☑☑Methylation; old/template strands are methylated, new/daughter strands are unmethylated ...
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NUR 239 Exam 4 Questions with Complete Solutions
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When explaining genetic coding to a group of students, the instructor discusses gene activation and deactivation. It was stressed that inactivation of a gene requires which of the following processes? Correct Answer-Methylation of histone amino acid 
 
When an infant is born with gene mutations in his cells, the nurse explains to the parents that accidental errors may be a result of: Select all that apply. Correct Answer-Loss of one or more base pairs 
Substitution of one base pair for another 
...
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BIOMG 3300 - Unit 9 Questions with complete Solutions
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Describe the five general procedures in DNA cloning Correct Answer-1. Obtaining the DNA segment to be cloned 
2. Selecting a small molecule of DNA capable of autonomous replication 
3. Joining two DNA fragments covalently 
4. Moving recombinant DNA from the test tube to a host organism 
5. Selecting or identifying host cells that contain recombinant DNA 
 
Are restriction enzymes made by eukaryotes or prokaryotes? What is their function in vivo? Correct Answer-Restriction endonucleases are found...
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NR 507 MIDTERM EXAM ALL EXAMS COMBINED plus Study Guide LATEST 5 NEW VERSIONS VERIFIED QUESTIONS AND ANSWERS (2022-2023)
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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...
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Should Know Study Set for ABGC Boards (100% correct answers)
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Angelman Syndrome causes (expression and % of total) correct answers **paternal imprinting defect, should be maternal expression 
 
5-7 kb deletion on maternal chr15q11.2-13 (60-70%) 
UBE3A maternal deletion (11%) 
Paternal UPD15 (3-7%) 
 
Angelman testing strategy and condition features correct answers methylation first since finds ~80% of cases then UBE3A seq and del/dup 
 
features: happy demeanor, abnormal gait, seizures, delayed/absent speech 
 
Prader-Willi Syndrome causes (expression and...
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ASCP MB: Extra-Practice Questions & Answers 2024
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ASCP MB: Extra-Practice Questions & Answers 2024 
 
 
The Klenow fragment of E. coli DNA polymerase I is used: - ANSWER-to label DNA probes by random primer labeling. 
 
What is a solution hybridization method for the detection of nucleic acid:protein interactions? - ANSWER-gel mobility shift assay 
 
_____ involves mixing a labeled oligonucleotide with a protein extract to see if a specific interaction occurs, visible with an apparent increase in molecular size on a gel due to the protein:nucle...
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ANSC 3270 Midterm 1 study Questions with 100% Correct Answers | Verified | Latest Update
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1.	which of the following statements about chickens is false? a- all chickens perceive danger equally 
b-genetics pre-determines how a chicken responds to danger 
c-a stress resilient chicken is able to recover from danger and remain healthy d-all of the above 
ANS: a 
2.	which of the following could contribute to variation in the stress response of lambs at weaning? 
a-methylation of the glucocorticoid receptor gene 
b-polymorphisms in the melancortin 2 receptor gene 
c-polymorphisms in the nic...
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USMLE Step 1- Biochemistry Questions and Answers(2022)Answered test
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USMLE Step 1- Biochemistry Questions and Answers(2022)Answered test 
 
 
 
Histones are rich in which 2 amino acids? Ans- Lysine 
Arginine 
 
What histone protein is responsible for binding to the nucleosome and to the "linker" DNA thereby stabilizing the chromatin fiber? Ans- H1 
 
When does DNA and histone synthesis occur in the cell cycle? Ans- S-phase 
 
Will the following be increased or decreased or neutral in heterochromatin? 
 
methylation 
acetylation Ans- methylation increased 
acety...
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CBSE FINAL EXAM 2023/2024 GRADED A LATEST VERSION
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CBSE FINAL EXAM 2023/2024 GRADED A LATEST 
VERSION 
A 66-year-old woman comes to the physician because of severe lower back pain. She is otherwise 
healthy with well-controlled hypertension and hyperlipidemia. She does not drink, but has smoked one 
pack of cigarettes per day for the past 20 years. An x-ray of the lumbar spine shows an anterior wedge 
compression fracture of L1. Results of dual-energy X-ray absorptiometry (DEXA) scan shows substantially 
decreased bone density in the region...
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USMLE Step 1- Biochemistry Exam Questions & Answers 2023/2024
- Exam (elaborations) • 43 pages • 2023
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USMLE Step 1- Biochemistry Exam Questions & Answers 2023/2024 
 
Histones are rich in which 2 amino acids? - ANSWER-Lysine 
Arginine 
 
What histone protein is responsible for binding to the nucleosome and to the "linker" DNA thereby stabilizing the chromatin fiber? - ANSWER-H1 
 
When does DNA and histone synthesis occur in the cell cycle? - ANSWER-S-phase 
 
Will the following be increased or decreased or neutral in heterochromatin? 
 
methylation 
acetylation - ANSWER-methylation increased ...
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