Dna methylation Samenvattingen, Aantekeningen en Examens
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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 treatment. 
Evidence: 20% of people ...
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MMSC 491 Exam 1 (Possible Questions with 100% Correct Answers)
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Nucleic Acids are correct answers DNA and RNA 
 
Types of Mutations correct answers 1. Deletion 
2. Duplication 
3. Insertions 
4. Tranlocation 
 
Translocation correct answers DNA is excahnged in reciprocal way from one chromosome to another 
 
Epigenetic Mechanisms correct answers -Changes in the phenotype 
-Heritable Mutation 
-Not from changes in the DNA sequences 
 
Causes of Epgentic mutation correct answers DNA Methylation or Histone modification 
 
Genome correct answers Collective term ...
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AAB Molecular Diagnostics- Nicole's questions and answers
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Nucleic Acid 
grows by attachment of 5' phosphate group of the incoming nucleotide to the 3'hydroxyl group of the last nucleotide 
 
 
 
double stranded DNA 
most energetically favorable state for DNA 
 
 
 
Purines 
double-ring structure Adenine (A) + Guanine (G) 
 
 
 
Pyrimidine 
single-ring structure Uracil (U)+ Cytosine 
 
 
 
Messenger RNA (mRNA) 
-template for all protein synthesis 
-encode all information necessary to produce proteins 
 
 
 
Heterogeneous nuclear RNA 
primary product o...
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BIOCHEM406 Practice Exam 3|103 Questions with Verified Answers,100% CORRECT
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BIOCHEM406 Practice Exam 3|103 Questions with Verified Answers 
 
Pick the best answer. 
A) The ratio of purine to pyrimidine 2 ́-deoxyribonucleotides in cells is always very close to 1. 
B) The ratio of (A+T) to (G+C) in cellular RNA polymers is always very 
close to 1. 
C) The ratio of (A+T) to (G+C) in cellular DNApolymersis always very 
close to 1. 
D) Answers B and C. 
E) Answers A and B and C. - CORRECT ANSWER A) The ratio of purine to pyrimidine 2 ́-deoxyribonucleotides in cells is alwa...
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AAB Molecular Diagnostics questions and answers(latest update)
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Nucleic Acid 
grows by attachment of 5' phosphate group of the incoming nucleotide to the 3'hydroxyl group of the last nucleotide 
 
 
 
double stranded DNA 
most energetically favorable state for DNA 
 
 
 
Purines 
double-ring structure Adenine (A) + Guanine (G) 
 
 
 
Pyrimidine 
single-ring structure Uracil (U)+ Cytosine 
 
 
 
Messenger RNA (mRNA) 
-template for all protein synthesis 
-encode all information necessary to produce proteins 
 
 
 
Heterogeneous nuclear RNA 
primary product o...
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Biochemistry WGU C785 FINAL EXAM Questions With Correct Answers Latest 2024 GRADED (Biochemistry Units 2-7)
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Biochemistry WGU C785 FINAL EXAM Questions With Correct Answers Latest 2024 GRADED (Biochemistry Units 2-7) What is the basic structure of an amino acid? What do they look like? - Answer amino 
group (NH2 or NH3), carboxyl group (COO or COOH), alpha carbon (C), and variable 
group 
How do you identify the 3 different types of side chains: non-polar/hydrophobic, polar, 
and charged? - Answer Non-polar/hydrophobic - end with CH or "can't have" water. 
Polar - end with OH, SH, or NH. Charged - e...
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BIO Practice from Practice Exam 2|112 Questions with Verified Answers,100% CORRECT
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BIO Practice from Practice Exam 2|112 Questions with Verified Answers 
 
Complementary base-pairing allows for 
A) genes to be expressed as phenotype. 
B) spontaneous mutations to occur. 
C) covalent bonds to form between the opposite bases. 
D) replication to be semiconservative. 
E) DNA to serve as its own template for replication. - CORRECT ANSWER E) DNA to serve as its own template for replication. 
 
6) The process by which genetic information is transferred from DNA to RNA is called ...
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Genetics Second Exam Practice Test 150 Questions with Verified Answers,100% CORRECT
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Genetics Second Exam Practice Test 150 Questions with Verified Answers 
 
Which organism has polycistronic mRNA? (eukaryotic or prokaryotic) - CORRECT ANSWER Prokaryotic 
 
Do prokaryotes undergo splicing/processing? - CORRECT ANSWER No 
 
Where are attenuater sequences found? (what type of organism and what class of operons?) - CORRECT ANSWER In prokaryotic amino acid operons 
 
Do prokaryotic mRNA ALWAYs encode trans-acting factors? - CORRECT ANSWER No 
 
Which of the following statements is t...
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WGU C785 Biochemistry FINAL EXAM Questions With Correct Answers Latest 2024 (GRADED)
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WGU C785 Biochemistry FINAL EXAM Questions With Correct Answers Latest 2024 (GRADED) What is the basic structure of an amino acid? What do they look like? - Answer amino 
group (NH2 or NH3), carboxyl group (COO or COOH), alpha carbon (C), and variable 
group 
How do you identify the 3 different types of side chains: non-polar/hydrophobic, polar, 
and charged? - Answer Non-polar/hydrophobic - end with CH or "can't have" water. 
Polar - end with OH, SH, or NH. Charged - end with a charge 
what ...
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ASCP MB: Extra-Practice Questions and Answers Scored A
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ASCP MB: Extra-Practice Questions and 
Answers Scored A 
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...