Homework Answers
DNA methylation happen when DNA get bind with methyl group. Due to that DNA become inactive so that transcription won't occur.
Histone deacetylation is that it removes acetyl group from the histone proteins that are attach to the DNA. When histones get deacetylated, then chromatids will become more condense so that they unable to do transcription.
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5. What is the connection between DNA methylation, histone deacetylation, and gene regulation in eukaryotes?
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hint(s) Acetylation of histone tails is a reversible process Some forms of chromatin modification can be passed on to future generations of cells. DNA is not transcribed when chromatin is packaged tightly in a condensed form. O Acetylation of histone tails in chromatin allows access to DNA for transcription. Deacetylation...
2. Give 2-3 examples of gene regulation in eukaryotes. Define what they are and how they...
2. Give 2-3 examples of gene regulation in eukaryotes. Define what they are and how they specifically regulate gene expression 3. What is histone acetyltransferase enzyme? How does it regulate gene expression? Explain your reasons 4. What is chromatin remodeling in general? 5. What is DNA methylation? What does methylation mean in this case? How does it intervene gene expression? Explain your reason
ton is not an energy dependent process in (B)) Falls eukaryotes 43. Histone methylation is associated...
ton is not an energy dependent process in (B)) Falls eukaryotes 43. Histone methylation is associated with Falls gene activation gene silencing Following histones are required during transcription (A) H2A and 2B (B) H3 (C) H4 (D) All of the above (E) H2AZ (c) induction (D) All of the above (E) None of the above 35. 4. DNA methylation silences gene expression AD True (B) Fall Leucine residues in lucine zipper proteins provides h ydrophobic interaction for dimerization (A) True...
Which statements about the modification of chromatin structure in eukaryotes are true? 1.DNA is not transcribed...
Which statements about the modification of chromatin structure in eukaryotes are true? 1.DNA is not transcribed when chromatin is packaged tightly in a condensed form 2.Some forms of chromatin modification can be passed on to future generations of cells 3.Acetylation of histone tails in chromatin allows access to DNA for transcription 4.Acetylation of histone tails is a reversible process. 5. Methylation of histone tails in chromatin can promote condensation of the chromatin 6. Deacetylation of histone tails in chromatin loosens...
17-11. Methylation of eukaryotic DNA controls gene expression. a) Describe in words the control of methylation of DNA in eukaryotes. b) Describe in words how silencing starts with methylation.
17-11. Methylation of eukaryotic DNA controls gene expression. a) Describe in words the control of methylation of DNA in eukaryotes. b) Describe in words how silencing starts with methylation.
help please Gene regulation in prokaryotes can occur through the following mechanisms EXCEPT: riboswitches Histone methylation...
help please
Gene regulation in prokaryotes can occur through the following mechanisms EXCEPT: riboswitches Histone methylation antisense RNA Regulatory elements
In contrast to histone acetylation, which always correlates with gene activation, histone methylation can lead to...
In contrast to histone acetylation, which always correlates with gene activation, histone methylation can lead to either transcriptional activation or repression. How do you suppose that the same modification - methylation - can mediate different biological outcomes? Explain what is meant when we say two DNA sequences are 'highly conserved'. Why are some sequences conserved and others aren't? In your own words, explain what is meant by "position effect". What is the molecular basis of this phenomenon?
Which of the following is not true regarding regulation of gene expression in eukaryotes? In eukaryotic...
Which of the following is not true regarding regulation of gene expression in eukaryotes? In eukaryotic cells, transcriptional activators often work by recruiting the transcriptional macinery to gene promoters DNA methylation is an example of an epigenetic mark that can be inherited Acetylation of histones can result in a more open chromatin structure to allow transcription to occur Different genes can be turned off or on between different organs or stages of development Transcription factor DNA sequences are bound by...
Part 1. Eukaryotes use at least two distinct mechanisms to control gene expression by altering the...
Part 1. Eukaryotes use at least two distinct mechanisms to control gene expression by altering the structure of chromatin around a particular gene. One of these mechanisms is the covalent modification of histones to switch DNA between an open and closed confirmation. A second mechanism is the covalent modification of DNA (typically on cytosines) by methylation. A. Describe a type of histone modification and explain what effect is has on chromatin, and how that effect is achieved. a. One type...
Once DNA or a histone is methylated, can that methylation be reversed?
Once DNA or a histone is methylated, can that methylation be reversed?
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hint(s) Acetylation of histone tails is a reversible process Some forms of chromatin modification can be passed on to future generations of cells. DNA is not transcribed when chromatin is packaged tightly in a condensed form. O Acetylation of histone tails in chromatin allows access to DNA for transcription. Deacetylation...
2. Give 2-3 examples of gene regulation in eukaryotes. Define what they are and how they specifically regulate gene expression 3. What is histone acetyltransferase enzyme? How does it regulate gene expression? Explain your reasons 4. What is chromatin remodeling in general? 5. What is DNA methylation? What does methylation mean in this case? How does it intervene gene expression? Explain your reason
ton is not an energy dependent process in (B)) Falls eukaryotes 43. Histone methylation is associated with Falls gene activation gene silencing Following histones are required during transcription (A) H2A and 2B (B) H3 (C) H4 (D) All of the above (E) H2AZ (c) induction (D) All of the above (E) None of the above 35. 4. DNA methylation silences gene expression AD True (B) Fall Leucine residues in lucine zipper proteins provides h ydrophobic interaction for dimerization (A) True...
help please
Gene regulation in prokaryotes can occur through the following mechanisms EXCEPT: riboswitches Histone methylation antisense RNA Regulatory elements
In contrast to histone acetylation, which always correlates with gene activation, histone methylation can lead to either transcriptional activation or repression. How do you suppose that the same modification - methylation - can mediate different biological outcomes? Explain what is meant when we say two DNA sequences are 'highly conserved'. Why are some sequences conserved and others aren't? In your own words, explain what is meant by "position effect". What is the molecular basis of this phenomenon?
Part 1. Eukaryotes use at least two distinct mechanisms to control gene expression by altering the structure of chromatin around a particular gene. One of these mechanisms is the covalent modification of histones to switch DNA between an open and closed confirmation. A second mechanism is the covalent modification of DNA (typically on cytosines) by methylation. A. Describe a type of histone modification and explain what effect is has on chromatin, and how that effect is achieved. a. One type...
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