Histone methylation - Study guides, Class notes & Summaries
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MB (ASCP) TEST 2023-2024 ATCUAL EXAM 300 QUESTIONS AND CORRECT (100% VERIFIED ANSWERS)
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Predominant form of DNA -Correct Answer Right-handed B 
 
DNA and histone interaction is due to what type of bond? -Correct Answer Ionic 
 
What stains to the minor groove of DNA duplex? -Correct Answer SYBR Green 
 
What is the most abundant type of RNA? -Correct Answer Ribosomal RNA (rRNA) 
 
What does RNA act as in a retrovirus? -Correct Answer Genome and mRNA 
 
What increases half-life of mRNA? -Correct Answer 5' Methyl Cap 
 
What kind of DNA is most likely to be transcriptionally active?...
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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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MMSC 491 EXAM 1 /WELL STRUCTURED QUESTIONS AND CORRECT ANSWERS 2024/2025 GRADED A+.
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MMSC 491 EXAM 1 /WELL 
STRUCTURED QUESTIONS AND 
CORRECT ANSWERS 2024/2025 
GRADED A+. 
2 / 6 
1. Epigenetic: Changes in phenotypeHeritable 
Not due to changes in DNA sequence DNA 
methylation or histone modification 
2. Collective term for all different DNA molecules within a cell or organism: - 
Genome 
3. DNA protein complex: Chromosome 
4. How many DNA molecules does a male have? female have?: Male 25Female 24 
5. Single ring based on carbon and nitrogen atoms 
C,T: Pyrimidine 
6. Double rin...
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SFSU Biology 230 Final Exam with complete solutions
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SFSU Biology 230 Final Exam with complete solutions 
What are the two components of the proton-motive force? 
a. pH gradient and equilibrium 
b. pH gradient and voltage 
c. voltage and ATP 
d. voltage and lipid-soluble agents - ️️ b. pH gradient and voltage 
Which molecule is responsible for unwinding DNA supercoils before replication in E. 
coli? 
a. DNA helicase 
b. DNA ligase 
c. DNA polymerase III 
d. Gyrase 
e. Topoisomerase I/II - ️️ a. DNA helicase 
What is the likely cause of an ...
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Biochemistry USMLE step 1 Quiz Complete Study Guide | Latest 2023/2024
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Biochemistry USMLE step 1 Quiz Complete Study Guide | Latest 2023/2024 
histones are rich in which 2 AA's -- lysine & argenine 
Barr bodies (what, type of chromatin) -- inactive X chromosomes 
heterochromatin (highly condensed, sterically inaccessible) 
less condensed, transcriptionally active, sterically accessible chromatin -- euchromatin 
DNA methylation at CpG islands -- represses transcription 
"CpG Methylation makes DNA Mute" 
DNA methylation (what is methylated and why?) -- template st...
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Biochemistry USMLE Step 1 Exam Questions With Answers
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Biochemistry USMLE Step 1 Exam Questions With Answers 
 
histones are rich in which 2 AA's -ANSWER- lysine & argenine 
 
Barr bodies (what, type of chromatin) -ANSWER- inactive X chromosomes 
heterochromatin (highly condensed, sterically inaccessible) 
 
less condensed, transcriptionally active, sterically accessible chromatin -ANSWER- euchromatin 
 
DNA methylation at CpG islands -ANSWER- represses transcription 
"CpG Methylation makes DNA Mute" 
 
DNA methylation (what is methylated and why...
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Bs161 final 2024 Exam Questions With Answers
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Bs161 final 2024 Exam Questions With Answers 
 
In messenger RNA, the protein-coding sequence is present in: 
Question options: 
exons. 
introns. 
exons and the poly(A) sequence. 
introns and the poly(A) sequence. - ANSWER exons. 
 
Which process produces multiple proteins from the same primary transcript in the same cell? 
Question options: 
chromatin remodeling 
histone modification 
alternative splicing 
combinatorial control - ANSWER alternative splicing 
 
Alternative splicing allow...
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Combined Genetics HMX Tests | 510 Questions with 100% Correct Answers | Verified | Latest Update 2024 | 109 Pages
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_________________________ approach to treatments involves a clinical trial with a group of affected 
individuals. Some receive the treatment and others receive a control. We evaluate if the treatment, on 
average, improves the outcome of the treatment group. - Traditional 
Between treatment and control groups in the traditional approach of treatment, there can be variability 
between groups where some groups respond favorably and others do not. Few even have adverse 
reactions. This could be bec...
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Chromosome Structure Test Questions with Answers
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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 ...
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GCU BIO 181 FINAL EXAM 4 with Complete Solutions
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The tryptophan operon is a repressible operon that is: - ANSWER-Turned off whenever tryptophan is added to the growth medium. 
 
The lactose operon is likely to be transcribed when: - ANSWER-The cyclic AMP and lactose levels are both high within the cell. 
 
For a repressible operon to be transcribed, which of the following must occur? - ANSWER-RNA polymerase must bind to the promoter, and the repressor must be inactive. 
 
Which of the following, when taken up by the cell, binds to the represso...
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