How is the activation of the GAL1 gene prevented in the presence of glucose? The presence...
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How is the activation of the GAL1 gene prevented in the
presence of glucose?
The presence...
A) An Operon is:? 1- A gene that affect another gene transcription. 2. A gene coding...
A) An Operon is:? 1- A gene that affect another gene transcription. 2. A gene coding for a metabolic pathway. 3. A protein that blockgene expression. 4. A set of genes under the control of one promoter. B )- In bacteria the Lac Operon genes code for proteins that break down.? 1- Arabinose 2- Lactose 3- Galactose 4- Glucose C )mRNA processing involves removal of .......? 1- Introns 2- The poly-A tail 3- The 5' cap 4- Exons D )...
The yeast two hybrid system, which is used for detecting interacting gene products, is dependent on...
The yeast two hybrid system, which is used for detecting interacting gene products, is dependent on which of the following: Choose one answer: A) activation of DNA polymerase by the nearby binding of interacting protein complexes B) having a promoter that responds directly to one of the two proteins whose interactions is being measured C) the interaction of DNA segments encoding proteins of interest . D) the stimulation of transcription by protein-protein interaction which leads to the formation of a...
The gene machine program shows you what happens when lactose is present in E. coli, and...
The gene machine program shows you what happens when lactose is present in E. coli, and how the lac operon is under negative control. However, the lac operon is also under positive control from a protein called CRP, eAMP Receptor Protein. The absence of the lac repressor is essential but not sufficient for effective transcription of the lac operon. RNA polymerase also depends on the presence of CRP. Like the lac repressor, which can bind to the DNA and lactose....
2. Note whether the sentence is true or false on the line following each sentence. If...
2. Note whether the sentence is true or false on the line following each sentence. If a statement is false, cross out one incorrect word or phrase in the sentence and write the correct word on top of the incorrect word. a. When glucose levels are high, CAMP levels are high, leading to the binding of CAP. When lactose levels are high, the repressor will not be bound; this all leads to the activation of lacZ transcription in bacteria. b....
Question 3 1 pts What would happen to the expression of this gene if this cell...
Question 3 1 pts What would happen to the expression of this gene if this cell did not have any GAL4 protein and why? It would be always off because GAL4 activates transcription . it would be always on because GAL80 won't be able to bind DNA without GAL4 it would be always on because GAL4 inhibits transcription it would only be on when galactose is present Question 4 1 pts What would happen to the expression of this gene...
The yeast Saccharomyces cerevisiae can grow as haploid or diploid cells. You have two haploid yeast...
The yeast Saccharomyces cerevisiae can grow as haploid or diploid cells. You have two haploid yeast strains that each carry recessive mutations that affect regulation of the genes required for galactose metabolism. One strain has a deletion of the region of the genome on chromosome II that lies between the GAL1 and GAL10 genes (deltaUAS). The other strain carries a mutant allele of the GAL80 gene on chromosome XIII that produces no functional GAL80 protein. Which of the following correctly...
Yet, all the cells in your body contain the same genes (and same alleles). The difference...
Yet, all the cells in your body contain the same
genes (and same alleles). The difference across cell types
is that genes get selectively expressed (turned on or off)
based on the proteins needed for cellular function given their
environment.
Select which statement explains the reason why hair does not
normally grow on your muscle cells.
a.
Muscle cells have the gene for keratin, but do not express
it
b.
Muscle cells do not have the gene for keratin and...
Looking at the diagram of transcription in eukaryotes and using the information provided, how could the...
Looking at the diagram of transcription in eukaryotes and using the
information provided, how could the expression of lactase RNA be
turned on and off by transcription factors, activators and
repressors?
Styles Font Paragraph Activators bind to genes at Rapressors bind to genes seauences and at shaoser sequences and The expression of RNA in eukaryotes is initiated by the binding of basal transcription factors to the promoter sequence of a gene. This leads to the recruitment of RNA polymerase to...
The following sentences describe chromatin structure and how altering chromatin structure can affect gene expression. Complete...
The following sentences describe chromatin structure and how altering chromatin structure can affect gene expression. Complete each sentence using the words provided.In some cells, DNA combines with proteins to form a substance calledThe lowest level of chromatin structure consists of DNA wrapped twice around a group of histones to form a(n)The formation of nucleosomes may block the binding of transcription factors and RNA polymerase II to theThe structure of chromatin can be modified by altering either the DNA or the...
The lac operon contains a DNA sequence known as the lac promoter (P or P+ for...
The lac operon contains a DNA sequence known as the lac promoter (P or P+ for wild type; P– for mutant (RNA polymerase does not bind)) that serves as the RNA polymerase binding site. The lac operon also contains a DNA sequence known as the Lac operator (O or O+ for wild type; O– or Oc for mutant (lac repressor cannot bind)) which is the binding site for lac repressor. The lac repressor, a protein, is encoded by the lac...
The gene machine program shows you what happens when lactose is present in E. coli, and how the lac operon is under negative control. However, the lac operon is also under positive control from a protein called CRP, eAMP Receptor Protein. The absence of the lac repressor is essential but not sufficient for effective transcription of the lac operon. RNA polymerase also depends on the presence of CRP. Like the lac repressor, which can bind to the DNA and lactose....
2. Note whether the sentence is true or false on the line following each sentence. If a statement is false, cross out one incorrect word or phrase in the sentence and write the correct word on top of the incorrect word. a. When glucose levels are high, CAMP levels are high, leading to the binding of CAP. When lactose levels are high, the repressor will not be bound; this all leads to the activation of lacZ transcription in bacteria. b....
Question 3 1 pts What would happen to the expression of this gene if this cell did not have any GAL4 protein and why? It would be always off because GAL4 activates transcription . it would be always on because GAL80 won't be able to bind DNA without GAL4 it would be always on because GAL4 inhibits transcription it would only be on when galactose is present Question 4 1 pts What would happen to the expression of this gene...
Yet, all the cells in your body contain the same
genes (and same alleles). The difference across cell types
is that genes get selectively expressed (turned on or off)
based on the proteins needed for cellular function given their
environment.
Select which statement explains the reason why hair does not
normally grow on your muscle cells.
a.
Muscle cells have the gene for keratin, but do not express
it
b.
Muscle cells do not have the gene for keratin and...
Looking at the diagram of transcription in eukaryotes and using the
information provided, how could the expression of lactase RNA be
turned on and off by transcription factors, activators and
repressors?
Styles Font Paragraph Activators bind to genes at Rapressors bind to genes seauences and at shaoser sequences and The expression of RNA in eukaryotes is initiated by the binding of basal transcription factors to the promoter sequence of a gene. This leads to the recruitment of RNA polymerase to...
The following sentences describe chromatin structure and how altering chromatin structure can affect gene expression. Complete each sentence using the words provided.In some cells, DNA combines with proteins to form a substance calledThe lowest level of chromatin structure consists of DNA wrapped twice around a group of histones to form a(n)The formation of nucleosomes may block the binding of transcription factors and RNA polymerase II to theThe structure of chromatin can be modified by altering either the DNA or the...
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