Methylation Study guides, Class notes & Summaries
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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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WGU Biochemistry OA (Latest 2022/2023) Verified Answers
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WGU Biochemistry OA (Latest 2022/2023) Verified Answers 
Bohr Effect chart (low pH) 
C- High CO2 
H- High H+ 
A- Acidic 
R-Release of O2(rt. Shift) 
T- tense state (in tissues) 
 
 
Primary structure 
Sequence of amino acids that make up a protein 
 
 
Secondary Structure 
Sequence of amino acids fold. 
 
 
Tertiary Structure 
-more folding in a 3D shape. 
-R groups (side chains) 
 
 
Quaternary Structure 
Protein has more than 1 polypeptide chain. 
 
 
Chemical reaction 
-absorb and release en...
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ETS MAJOR FIELD TEST IN BIOLOGY 2024 QUESTIONS WITH CORRECT ANSWERS ALREADY PASSED AND VERIFIED
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Pyrimidine dimers formed in DNA due to UV radiation can be repaired by? 
SOS repair 
Double strand break repair 
Mismatch repair 
Photoreactivation repair (nucleotide excision repair) 
Base excision repair - CORRECT ANSWER Photoreactivation repair (nucleotide excision repair) 
Which of the following repair mechanisms uses methyl groups to distinguish between parental and daughter strands? 
 
Answers: 
Mismatch repair 
Photoreactivation repair (Nucleotide excision repair) 
SOS repair 
Doub...
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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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NR507 Midterm Test Questions with Complete Solutions
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NR507 Midterm Test Questions with Complete Solutions 
 
What is epigenetics? - ANSWER The study of heritable changes in gene expression or phenotype casued by mechanisms *other* than changes in DNA sequences. 
 
DNA methylation - ANSWER The attachment of a methyl group to a cytosine base is followed by a guanine base...causes a gene to become transcriptionally inactive or silent. 
 
Epigenetic processes play a major role in cancer initiation, progression, and treatmen...
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Study Set for ABGC Boards (A+ Graded)
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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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USMLE Step 1- Biochemistry Questions and Answers (Graded A+)
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USMLE Step 1- Biochemistry Questions and 
Answers (Graded A+) 
Histones are rich in which 2 amino acids? - CORRECT ANSWER Lysine 
Arginine 
What histone protein is responsible for binding to the nucleosome and to the "linker" 
DNA thereby stabilizing the chromatin fiber? - CORRECT ANSWER H1 
When does DNA and histone synthesis occur in the cell cycle? - CORRECT ANSWER 
S-phase 
Will the following be increased or decreased or neutral in heterochromatin? 
methylation 
acetylation - CORRECT AN...
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NR507 Midterm Test Questions with Complete Solutions
- Exam (elaborations) • 11 pages • 2024
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NR507 Midterm Test 
Questions with Complete 
Solutions 
What is epigenetics? - ANSWER The study of heritable changes in gene 
expression or phenotype casued by mechanisms *other* than changes in DNA 
sequences. 
DNA methylation - ANSWER The attachment of a methyl group to a cytosine 
base is followed by a guanine base...causes a gene to become transcriptionally inactive 
or silent. 
Epigenetic processes play a major role in cancer initiation, progression, and treatment. 
Evidence: 20% of people ...
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ABGC Boards Overview Questions and Answers 100% Solved
- Exam (elaborations) • 18 pages • 2024
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ABGC Boards Overview Questions 
and Answers 100% Solved 
Angelman Syndrome causes (expression and % of total) ️️**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 ️️methylation first since finds ~80% of 
cases then UBE3A seq and del/dup 
features: happy demeanor, abnormal gait, seizures, delayed/absent speech 
Prader-Wil...
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ETS MAJOR FIELD TEST IN BIOLOGY SENIOR SEMINAR FINAL 2024 QUESTIONS WITH CORRECT ANSWERS ALREADY PASSED AND VERIFIED
- Exam (elaborations) • 63 pages • 2024
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Pyrimidine dimers formed in DNA due to UV radiation can be repaired by? 
SOS repair 
Double strand break repair 
Mismatch repair 
Photoreactivation repair (nucleotide excision repair) 
Base excision repair - CORRECT ANSWER Photoreactivation repair (nucleotide excision repair) 
Which of the following repair mechanisms uses methyl groups to distinguish between parental and daughter strands? 
 
Answers: 
Mismatch repair 
Photoreactivation repair (Nucleotide excision repair) 
SOS repair 
Doubl...
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