Homework Answers
When no molecule of X is pressnt, then A can not bind to the either site on DNA. No.
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The A-X binds to the site 1 at low concentration. This suggests that A-X has higher affinity to bind to Site1 as compared to site2.
Site 1 has higher affinty.
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Site 2 requires much larger concentration of A-X in order to bind to it. Because the A-X binds to site at lower concentration. This suggests that site 2 requires larger concentration as compared to site 1.
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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....
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...
Exam Practice Questions: L09-11 1. Fill in each blank with the best word or phrase selected...
Exam Practice Questions: L09-11 1. Fill in each blank with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase should be used only once. promoter translation pause site RBS sigma factor tmRNA RNA polymerase stop codon transcription Rho factor ribosome start codon DNA polymerase attenuation tRNA The first step in gene expression is by to make an mRNA that encodes for one or more proteins. This requires...
1. The ribosome is important for catalyzing the formation of peptide bonds. Which of the following...
1. The ribosome is important for catalyzing the formation of peptide bonds. Which of the following statements is true? (a) The number of rRNA molecules that make up a ribosome greatly exceeds the number of protein molecules found in the ribosome. (b) The large subunit of the ribosome is important for binding to the mRNA. (c) The catalytic site for peptide bond formation is formed primarily from an rRNA. (d) Once the large and small subunits of the ribosome assemble,...
gene regulation of bacteria operon systems. Protected View . Saved to this PG References Mailings Review...
gene regulation of bacteria operon systems. Protected View . Saved to this PG References Mailings Review View Help Tell me what you want to do ernet can contain viruses. Unless you need to edit, it's safe to stay in Protected View Enable Editing 5. What happens if lactose levels are low? Put the following list in order (1-5). RNA polymerase is blocked from transcribing the genes for the lactose metabolizing enzymes When RNA polymerase binds to the promoter, it cannot...
Please explain your answers as best as you can. I want to be able to understand....
Please explain your answers as best as you can. I want to be
able to understand.
The first drawing below represents the transcription start site and upstream region of a eukaryotic gene. In addition, four deletion constructs are shown, where the unboxed area represents a deletion of upstream DNA. Note the location of the +1 start site and the promoter, which includes the TATA box Non-deleted DNA template and DNA of the various deletions constructs were added to both systems...
Select the most nucleophilic site on the molecule. 1) 2) 3) OH 5) NH2 4)
Select the most nucleophilic site on the molecule. 1) 2) 3) OH 5) NH2 4)
In prokaryotes the consensus sequence begins. is located about 10 bases upstream from the initiation site....
In prokaryotes the consensus sequence begins. is located about 10 bases upstream from the initiation site. It has the and is responsible for identifying the precise nucleotide at which TATA box, TATAAA, transcription Pribnow box, TATAAT, transcription 0 0 0 0 0 Pribnow box, TATAAT, translation Pribnow bow, TTGACA, translation None of the answers are correct Ribosomes are made of: 1. rRNA 2. proteins 3. URNA 3 2 Both 1 and 2 are correct All answers are correct 1 Once...
Consider a secondary active transporter that uses symport for two molecules, X and Y. If X...
Consider a secondary active transporter that uses symport for two molecules, X and Y. If X is the molecule being actively pumped and Y is present in higher concentration inside the cell, which of the following is true? (It might be helpful to sketch out the situation to visualize it better.) Xis present at higher concentrations inside the cell. X is being pumped from outside the cell into the cell. Xis present at higher concentrations outside the cell. Y is...
1. How is the start codon identified in prokaryotic cells? a. It is the only AUG...
1. How is the start codon identified in prokaryotic cells? a. It is the only AUG on the mRNA strand. b. It is the AUG after the Shine-Dalgarno sequence. c. It is the AUG right next to the promoter on the mRNA. d. It is the AUG after the Kozak sequence. e. It is the AUG nearest the 5' end of the mRNA. 2. All of the following are true for eukaryotic transcription EXCEPT: a. Transcription can be terminated when...
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....
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...
Exam Practice Questions: L09-11 1. Fill in each blank with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase should be used only once. promoter translation pause site RBS sigma factor tmRNA RNA polymerase stop codon transcription Rho factor ribosome start codon DNA polymerase attenuation tRNA The first step in gene expression is by to make an mRNA that encodes for one or more proteins. This requires...
gene regulation of bacteria operon systems. Protected View . Saved to this PG References Mailings Review View Help Tell me what you want to do ernet can contain viruses. Unless you need to edit, it's safe to stay in Protected View Enable Editing 5. What happens if lactose levels are low? Put the following list in order (1-5). RNA polymerase is blocked from transcribing the genes for the lactose metabolizing enzymes When RNA polymerase binds to the promoter, it cannot...
Please explain your answers as best as you can. I want to be
able to understand.
The first drawing below represents the transcription start site and upstream region of a eukaryotic gene. In addition, four deletion constructs are shown, where the unboxed area represents a deletion of upstream DNA. Note the location of the +1 start site and the promoter, which includes the TATA box Non-deleted DNA template and DNA of the various deletions constructs were added to both systems...
Select the most nucleophilic site on the molecule. 1) 2) 3) OH 5) NH2 4)
In prokaryotes the consensus sequence begins. is located about 10 bases upstream from the initiation site. It has the and is responsible for identifying the precise nucleotide at which TATA box, TATAAA, transcription Pribnow box, TATAAT, transcription 0 0 0 0 0 Pribnow box, TATAAT, translation Pribnow bow, TTGACA, translation None of the answers are correct Ribosomes are made of: 1. rRNA 2. proteins 3. URNA 3 2 Both 1 and 2 are correct All answers are correct 1 Once...
Consider a secondary active transporter that uses symport for two molecules, X and Y. If X is the molecule being actively pumped and Y is present in higher concentration inside the cell, which of the following is true? (It might be helpful to sketch out the situation to visualize it better.) Xis present at higher concentrations inside the cell. X is being pumped from outside the cell into the cell. Xis present at higher concentrations outside the cell. Y is...
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