If cAMP levels have recently gone up significantly within a bacterial cell, which of the following...
If cAMP levels have recently gone up significantly within a bacterial cell, which of the following are true:
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glucose levels have increased |
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glucose levels have decreased |
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lactose levels have increased |
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lactose levels have decreased |
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transcription of lacZ will likely increase |
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transcription of lacZ will likely decrease |
Homework Answers
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If cAMP levels have recently gone up significantly within a
bacterial cell, which of the following...
1) Which of the following conditions is most likely to cause the lactose operon to be...
1) Which of the following conditions is most likely to cause the lactose operon to be transcribed? A) There is more glucose in the cell than lactose. B) There is glucose but no lactose in the cell. C) The cyclic AMP and lactose levels are both high within the cell. D) The CAMP level is high and the lactose level is low. 2) How does the transcription of structural genes in an inducible operon occur? A) It occurs continuously in...
2. Suppose you have six strains of E. coli. One is wild type, and each of the other five has a single one of the follow...
2. Suppose you have six strains of E. coli. One is wild type, and each of the other five has a single one of the following mutations: lacZ, lacY, laď·0; and lach. For each of these six strains, describe the phenotype you would observe using the following assays. Explain your answers. [Notes: (1) IPTG is a colorless synthetic molecule that acts as an inducer of lac operon expression but cannot serve as a carbon source for bacterial growth because it...
Which of the following would be associated with HIGH glycolysis rate? Increased camp levels High free energy charge Dec...
Which of the following would be associated with HIGH glycolysis rate? Increased camp levels High free energy charge Decreased levels of F-1,6-BP Binding of protein G to GTP Decreased phosphoprotein phosphatase activity Decreased insulin levels Fasting Unphosphorylated pyruvate kinase
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...
Which of the following might decrease the transcription of all genes in a bacterial cell? Select...
Which of the following might decrease the transcription of all genes in a bacterial cell? Select one: a. a decrease in the amount of sigma factor b. a decrease in the amount of RNA polymerase II c. a mutation that introduced extensive sequence changes into the DNA that precedes a single gene’s transcription start site d. a mutation that introduces a stop codon into the DNA that precedes the gene’s coding sequence
Please help me with this question and if you can explain why. Which of the following...
Please help me with this
question and if you can explain why.
Which of the following statements are true for bacteria grown in the absence of glucose and absence of lactose? Select all that apply. High levels of cAMP CAP bound to CAP binding site Low or no levels of allolactose O High levels of lacZYA mRNA No transcription of lacZYA Lac repressor bound to operator CAP is not bound to binding site O High levels of allolactose Lac repressor...
Which of the following statements about Huntington's is true? You can retry this question, the average...
Which of the following statements about Huntington's is true? You can retry this question, the average of your two answers is recorded. You should see feedback if you get a question wrong. O a. The mutated allele(s) has/have lost the function of keeping brain cells healthy, and is/are therefor a dominant disease O b. Huntington is a very rare and therfor recessive. c. Huntington strikes people after reproductive age and is therefor dominant. d. The mutated allele(s) has/have gained the...
4. (2pts) Which of the following is true concerning expression levels of the BIS gene in...
4. (2pts) Which of the following is true concerning expression levels of the BIS gene in cells expressing miR-5? BIS gene expression is increased in these cells BIS gene expression is decreased in these cells BIS gene expression remains unchanged in cells expressing miR-5 Transcription initiation of BIS is negatively regulated Question 4 2 pts 5.(2pts) Which of the following are true of p101 expression in these cells? o increased amounts of the p101 protein due to low levels of...
Question 7 2 pts Which of these genes would not likely be regulated by the bacterial...
Question 7 2 pts Which of these genes would not likely be regulated by the bacterial SOS response?! Translesion DNA polymerase Cell division promoter Holliday junction branch migration enzyme Nucleotide excision repair enzyme Question 8 2 pts Which of these mutations is likely to have the greatest impact on the amino acid composition of the resulting protein? Silent Synonymous Frameshift Missense Question 9 2 pts What would be the result of perfect and continuous suppression of the lac operon in...
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....
1) Which of the following conditions is most likely to cause the lactose operon to be transcribed? A) There is more glucose in the cell than lactose. B) There is glucose but no lactose in the cell. C) The cyclic AMP and lactose levels are both high within the cell. D) The CAMP level is high and the lactose level is low. 2) How does the transcription of structural genes in an inducible operon occur? A) It occurs continuously in...
2. Suppose you have six strains of E. coli. One is wild type, and each of the other five has a single one of the following mutations: lacZ, lacY, laď·0; and lach. For each of these six strains, describe the phenotype you would observe using the following assays. Explain your answers. [Notes: (1) IPTG is a colorless synthetic molecule that acts as an inducer of lac operon expression but cannot serve as a carbon source for bacterial growth because it...
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...
Please help me with this
question and if you can explain why.
Which of the following statements are true for bacteria grown in the absence of glucose and absence of lactose? Select all that apply. High levels of cAMP CAP bound to CAP binding site Low or no levels of allolactose O High levels of lacZYA mRNA No transcription of lacZYA Lac repressor bound to operator CAP is not bound to binding site O High levels of allolactose Lac repressor...
Which of the following statements about Huntington's is true? You can retry this question, the average of your two answers is recorded. You should see feedback if you get a question wrong. O a. The mutated allele(s) has/have lost the function of keeping brain cells healthy, and is/are therefor a dominant disease O b. Huntington is a very rare and therfor recessive. c. Huntington strikes people after reproductive age and is therefor dominant. d. The mutated allele(s) has/have gained the...
4. (2pts) Which of the following is true concerning expression levels of the BIS gene in cells expressing miR-5? BIS gene expression is increased in these cells BIS gene expression is decreased in these cells BIS gene expression remains unchanged in cells expressing miR-5 Transcription initiation of BIS is negatively regulated Question 4 2 pts 5.(2pts) Which of the following are true of p101 expression in these cells? o increased amounts of the p101 protein due to low levels of...
Question 7 2 pts Which of these genes would not likely be regulated by the bacterial SOS response?! Translesion DNA polymerase Cell division promoter Holliday junction branch migration enzyme Nucleotide excision repair enzyme Question 8 2 pts Which of these mutations is likely to have the greatest impact on the amino acid composition of the resulting protein? Silent Synonymous Frameshift Missense Question 9 2 pts What would be the result of perfect and continuous suppression of the lac operon in...
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....
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