Homework Answers
- Positive regulators help recruit ribosomes
- positive regulators often bind effectors before binding with
DNA
- during signal transduction, effector bound positive regulators (inactive form) gets dissociated (activated form) by effector proteins then they bind with DNA.
- Activators regulates degradative pathways
- positive regulators help recruit RNA polymerase
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on Select all characteristics of proteins that are positive regulators of transcription Check All That Apply...
Select all characteristics of repressor proteins. Check Al That Apply Able to bind is acting elements...
Select all characteristics of repressor proteins. Check Al That Apply Able to bind is acting elements in DNA May bind an inducer molecule that changes its conformation Mutant superrepressor proteins inhibit transcription without binding inducer Are trans-acting proteins Has the ability to bind trans-acting elements in DNA Are cis-acting proteins Regulate catabolic pathways only
3. This is a schematic of a very simple pattern of gene expression. Yes means the...
3. This is a schematic of a very simple pattern of gene expression. Yes means the protein is present and can bind the promoter. No means the protein is absent. Transcription factors are proteins that help regulate transcription by binding DNA Activators are transcription factors that help transcription. For example, they bend the promoter and make it accessible to RNA polymerase. Repressors are transcription factors that inhibit transcription. For example, they might bind the promoter and stop the RNA polymerase...
Question 1 Match the term with the best definition or description; most topics relate to the...
Question 1 Match the term with the best definition or description; most topics relate to the regulation of gene expression. General type of protein which will increase transcription rates when it attaches to a site A. Factor connected to a particular gene - B. Co-repressor C. Enhancer D. Promoter E. Structural F. Intron G. Activator H. Operator I. Basal transcription J. Glucocorticoid receptor K. Sigma factor L. Mediator M. Inducer N. TATA box O. Repressor The rates of mRNA produced...
Which of the following is NOT a function of transcription that requires the activity from subunits...
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
choose the right answer : 1- what is degradation of ' unwanted' proteins in eukaryotic cells...
choose the right answer : 1- what is degradation of ' unwanted' proteins in eukaryotic cells A- polyribosomes B- proteasomes C- editosome D- spliceosomes 2- addition or deletion of bases causes which kind of mutation A- transition B- transcription C- transversion D- frameshift mutation 3- point mutation involve : A- change in single base pair B- deletion C- duplication D- insertion 4- what is the complementary m-RNA sequence for the DNA sequence C-A-A-G-G-T A- C-A-A-G-G-U B- G-U-U-C-C-A C- C-A-A-G-G-T D-...
QUESTION 25 The concentration of mitotic cyclin ____________________. A. is highest in G1 phase B. decreases...
QUESTION 25 The concentration of mitotic cyclin ____________________. A. is highest in G1 phase B. decreases at the end of M phase as a result of ubiquitylation and degradation C. decreases at the prophase D. is controlled by phosphorylation QUESTION 26 Which of the following statements about the ubiquitin-proteasome pathway is false? A. Proteases, which reside in the central cylinder of a proteasome, degrade the ubiquitin-modified protein. B. Ubiquitin is a small protein that is non-covalently attached to proteins to...
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...
Microbiology study guide questions. Please Help! s. which of the following statements about water activity is not true? a) many fungi can tolerate aw levels of 07-0.8 b) many microorganisms grow...
Microbiology study guide questions. Please Help!
s. which of the following statements about water activity is not true? a) many fungi can tolerate aw levels of 07-0.8 b) many microorganisms grow well at an aw of 0.98 e sear water has an aw of 0.98 e-xerephiles thrive in dry conditions DNA typically becomes disordered below an a of o.90 Which of the following descriptions about ribosome structure is not true? a) 80s is the size of the intact functional ribosome...
A genetically engineered plasmid Ficarries all of the elements of the lac operon, but replaces the...
A genetically engineered plasmid Ficarries all of the elements of the lac operon, but replaces the structural genes with the reporter gene green fluorescent protein (GFP). The repressor allele cannot bind lactose, and the OC allele cannot be bound by the repressor. Given the following genotypes and growth media that does not contain glucose, indicate in the table below whether you expect to see b-galactosidase activity and glowing green colonies of E. coli by selecting Yes or No. growth media...
2.) Activator and helper. Figure 19.29B gives the fold change for a genetic network with an...
2.) Activator and helper. Figure 19.29B gives the fold change
for a genetic network with an activator and helper. However, it
contains several mistakes that we will fix here.
a.) Derive the formula for the fold change under the assumptions
of a weak promoter and �!"# $% ≫ �. Show that the fold change is
given by the formula below rather than that in the book. Hint: The
schematic in Figure 19.29B should be helpful in determining the
states and...
Select all characteristics of repressor proteins. Check Al That Apply Able to bind is acting elements in DNA May bind an inducer molecule that changes its conformation Mutant superrepressor proteins inhibit transcription without binding inducer Are trans-acting proteins Has the ability to bind trans-acting elements in DNA Are cis-acting proteins Regulate catabolic pathways only
3. This is a schematic of a very simple pattern of gene expression. Yes means the protein is present and can bind the promoter. No means the protein is absent. Transcription factors are proteins that help regulate transcription by binding DNA Activators are transcription factors that help transcription. For example, they bend the promoter and make it accessible to RNA polymerase. Repressors are transcription factors that inhibit transcription. For example, they might bind the promoter and stop the RNA polymerase...
Question 1 Match the term with the best definition or description; most topics relate to the regulation of gene expression. General type of protein which will increase transcription rates when it attaches to a site A. Factor connected to a particular gene - B. Co-repressor C. Enhancer D. Promoter E. Structural F. Intron G. Activator H. Operator I. Basal transcription J. Glucocorticoid receptor K. Sigma factor L. Mediator M. Inducer N. TATA box O. Repressor The rates of mRNA produced...
Which of the following is NOT a function of transcription that requires the activity from subunits of the Core RNA Palymerase? a. RNA polymerase activity that base-pairs and polymerizes nucleotides to make mRNA. b. Helicase activity that unwinds the double-stranded DNA molecule for transcription c. Specific recognition of -35 box and -10 box sites in the promoter region. d. General binding that helps RNA polymerase loosely adhere to DNA, before Transcription begins. Oe. Trick Question. The Core RNA polymerase can...
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...
Microbiology study guide questions. Please Help!
s. which of the following statements about water activity is not true? a) many fungi can tolerate aw levels of 07-0.8 b) many microorganisms grow well at an aw of 0.98 e sear water has an aw of 0.98 e-xerephiles thrive in dry conditions DNA typically becomes disordered below an a of o.90 Which of the following descriptions about ribosome structure is not true? a) 80s is the size of the intact functional ribosome...
A genetically engineered plasmid Ficarries all of the elements of the lac operon, but replaces the structural genes with the reporter gene green fluorescent protein (GFP). The repressor allele cannot bind lactose, and the OC allele cannot be bound by the repressor. Given the following genotypes and growth media that does not contain glucose, indicate in the table below whether you expect to see b-galactosidase activity and glowing green colonies of E. coli by selecting Yes or No. growth media...
2.) Activator and helper. Figure 19.29B gives the fold change
for a genetic network with an activator and helper. However, it
contains several mistakes that we will fix here.
a.) Derive the formula for the fold change under the assumptions
of a weak promoter and �!"# $% ≫ �. Show that the fold change is
given by the formula below rather than that in the book. Hint: The
schematic in Figure 19.29B should be helpful in determining the
states and...
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