8: Due to the exposure of a cell to an environmental factor, a gene that was...
8: Due to the exposure of a cell to an environmental factor, a gene that was in a euchromatin region ends up being tightly wrapped around a histone. What will be the consequence of this event?
Homework Answers
Histone acetylation and deacetylation are essential parts of gene regulation. These reactions are typically catalysed by enzymes with "histone acetyl transferase" (HAT) or "histone deacetylase"(HDAC) activity. relaxed , transcriptionally active DNA referred as euchromatin. here may be due to mutation, the trascriptionally active form of DNA converted into more condensed ( tightly packed) DNA referred as heterochromatin.
please share your valuable feedback. Thank you.☺
Add Answer to:
8: Due to the exposure of a cell to an environmental factor, a
gene that was...
If in a gene an ACG codon is mutated due to exposure to an alkylation reagent,...
If in a gene an ACG codon is mutated due to exposure to an alkylation reagent, what mutagenized codons can occur?
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...
As described in Chapter 8, exposure assessment is a key part of any environmental epidemiology research....
As described in Chapter 8, exposure assessment is a key part of any environmental epidemiology research. How would you measure exposure to nature? What is a "dose" of nature? 100 word minimum
Questions 8-9: In eukaryotes, miR-5 is a microRNA with sequence complementarity to the 3'UTR of the...
Questions 8-9: In eukaryotes, miR-5 is a microRNA with sequence complementarity to the 3'UTR of the MRNA transcript encoded by the UCD gene. The UCD gene encodes for a protein that acts as an allosteric activator of the protein p101. The p101 protein is a DNA methyltransferase (DNMT) which is an enzyme that methylates DNA when the protein is in its active form. 8. 8. (1pt) In a lung cancer cell line, the p101 protein is overly active leading to...
Understanding control of gene expression by chromatin regulation We discussed how maternal grooming behavior regulates anxiety...
Understanding control of gene expression by chromatin regulation We discussed how maternal grooming behavior regulates anxiety and stress response in rats. Rats raised by low-care mothers grow up to be more anxious and guarded adults. Rats raised by high-care mothers on the other hand become more relaxed adults. Below are two key results from the study that discovered this phenomenon. Scientists looked at DNA methylation in the promoter of a gene called glucocorticoid receptor which is expressed in the hippocampus...
Carvas X CO Inactivation of a specific transcription factor Modifications to the RNA transcript OPresence of...
Carvas X CO Inactivation of a specific transcription factor Modifications to the RNA transcript OPresence of repressor protelns to reduce transcription Question 8 10pts The following lists many forms in which gene expression ls regulated in Eukaryotes. Which of those is common to both prokaryotes and eukaryotes? Tight colling of the DNA around histone proteins, making it inaccessible to RNA polymerase Protecting the mRNA by adding a 5 G-cap and 3 poly A tal O Repulating the availablity of transcription...
please answer all the questions Question 8 0 / 1 pts Our understanding of RNA ...
please answer all the questions
Question 8
0 / 1 pts
Our understanding of RNA
was non-existent until 2000
started with the identification of a tRNA which suggested a
method of converting DNA to protein
began to identify that DNA-->protein--> RNA
stopped growing after it's original discovery in the 70s
IncorrectQuestion 10
0 / 1 pts
Enzymes allow for chemical reactions to occur in the cell that
may not naturally occur at the right place at...
Trivia Questions 1. This level of control in gene expression prevents a gene from being transcribed...
Trivia Questions 1. This level of control in gene expression prevents a gene from being transcribed when it is not needed. 2. These genes produce proteins that govern the activity of structural genes. 3. These intervening sequences are cut out of an mRNA transcript before it can leave the nucleus. 4. A chromosome is made up of these two molecules. 5. This term refers to DNA that is composed of at least two species. 6. These two vectors are used...
What control elements regulate expression of the mPGES-1 gene? The promoter of a gene includes the...
What control elements regulate expression of the mPGES-1 gene? The promoter of a gene includes the DNA immediately upstream of the transcription start site, but expression of the gene can also be affected by control elements. These can be thousands of base pairs upstream of the promoter, grouped in an enhancer. Because the distance and spacing of these control elements make them difficult to identify, scientists begin by deleting sections of DNA that contain possible control elements and measuring the...
33. Which of the following conditions are necessary for a gene to be expressed? A. condensed...
33. Which of the following conditions are necessary for a gene to be expressed? A. condensed chromatin with DNA tightly coiled around nucleosomes B. open chromatin making the gene available for transcription C. specific signals from the environment D. active retrotransposons E. Both A and C are true F. Both B and C are true G. all of the above 34. Which of the following histone modifications results in more open chromatin? A. methylation B. acetylation C. restriction enzyme digest...
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...
Questions 8-9: In eukaryotes, miR-5 is a microRNA with sequence complementarity to the 3'UTR of the MRNA transcript encoded by the UCD gene. The UCD gene encodes for a protein that acts as an allosteric activator of the protein p101. The p101 protein is a DNA methyltransferase (DNMT) which is an enzyme that methylates DNA when the protein is in its active form. 8. 8. (1pt) In a lung cancer cell line, the p101 protein is overly active leading to...
Understanding control of gene expression by chromatin regulation We discussed how maternal grooming behavior regulates anxiety and stress response in rats. Rats raised by low-care mothers grow up to be more anxious and guarded adults. Rats raised by high-care mothers on the other hand become more relaxed adults. Below are two key results from the study that discovered this phenomenon. Scientists looked at DNA methylation in the promoter of a gene called glucocorticoid receptor which is expressed in the hippocampus...
Carvas X CO Inactivation of a specific transcription factor Modifications to the RNA transcript OPresence of repressor protelns to reduce transcription Question 8 10pts The following lists many forms in which gene expression ls regulated in Eukaryotes. Which of those is common to both prokaryotes and eukaryotes? Tight colling of the DNA around histone proteins, making it inaccessible to RNA polymerase Protecting the mRNA by adding a 5 G-cap and 3 poly A tal O Repulating the availablity of transcription...
please answer all the questions
Question 8
0 / 1 pts
Our understanding of RNA
was non-existent until 2000
started with the identification of a tRNA which suggested a
method of converting DNA to protein
began to identify that DNA-->protein--> RNA
stopped growing after it's original discovery in the 70s
IncorrectQuestion 10
0 / 1 pts
Enzymes allow for chemical reactions to occur in the cell that
may not naturally occur at the right place at...
Trivia Questions 1. This level of control in gene expression prevents a gene from being transcribed when it is not needed. 2. These genes produce proteins that govern the activity of structural genes. 3. These intervening sequences are cut out of an mRNA transcript before it can leave the nucleus. 4. A chromosome is made up of these two molecules. 5. This term refers to DNA that is composed of at least two species. 6. These two vectors are used...
33. Which of the following conditions are necessary for a gene to be expressed? A. condensed chromatin with DNA tightly coiled around nucleosomes B. open chromatin making the gene available for transcription C. specific signals from the environment D. active retrotransposons E. Both A and C are true F. Both B and C are true G. all of the above 34. Which of the following histone modifications results in more open chromatin? A. methylation B. acetylation C. restriction enzyme digest...
Most questions answered within 3 hours.
-
An object is located 7.10 cm in front of a mirror. The virtual
image is located...
asked 1 hour ago -
Write a program in python that lets the user play the game Rock,
Paper, Scissors against...
asked 2 hours ago -
A car starts from rest on a curve with a radius of 150 m and
tangential...
asked 5 hours ago -
In Star Wars both the Storm Troopers and Droid Army are
notoriously bad shots. In order...
asked 8 hours ago -
when buffers react with h+ or oh-, do the ratio of conjugate
base to acid and...
asked 8 hours ago -
A population of values has a normal distribution with μ=207.3
and σ=35.8. A random sample of...
asked 8 hours ago -
An unknown solution was treated with H2SO4 and refluxed for 2
hours. The mixture was then...
asked 8 hours ago -
Let x be the age of a licensed driver in years. Let
y be the percentage...
asked 9 hours ago -
System.out.print( "Barrel\t"+"of"+"Laughs" );
asked 10 hours ago -
Need a 1,000 word self explanatory essay on how
characteristics of the functional, matrix & bureaucracy...
asked 10 hours ago -
(Could you explain how I can answer the question and what the
equation I will use)....
asked 10 hours ago -
The ΔGf0 values for HCO3- (aq),
CO32-(aq), and H+(aq) are -587.06,
-528.10 and 0 kJ mol-1,...
asked 10 hours ago