Which of the following would cause a cell to go from a prophage to lytic phage?...
Which of the following would cause a cell to go from a prophage to lytic phage?
A. UV
B. Glucose
C. cAMP
D. Lactose
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Which of the following would cause a cell to go from a prophage
to lytic phage?...
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...
ach) 1. Which of the following statements correctly describes one replication? characteristic of the lytic cycle...
ach) 1. Which of the following statements correctly describes one replication? characteristic of the lytic cycle of viral Many bacterial cells containing viral DNA are produced 8) Viral DNA is incorporated into the host genome C) Th e viral genome replicates without destroying the host The bacterial host provides the nucleotides, enzymes, ribosomes and other co requires to make viral components D) 2. What is the function of the viral glycoproteins that are present in an enveloped virus? A) They...
For an electrophoretic mobility shift assay, you mix in a test tube bacterial cell extract and...
For an electrophoretic mobility shift assay, you mix in a test tube bacterial cell extract and a 32P-labeled fragment of DNA that contains the CAP binding site and the lacP of the lac operon. It does not contain lacO or any of the structural genes. Which of the following would cause a mobility shift if added to the mix? Group of answer choices glucose lactose allolactose cAMP anti-lac repressor antibody anti-CAP antibody a. glucose b. lactose c. allolactose d. cAMP...
22. (2 pts) The following step(s) occur in replication of both Bdellovibrio and a lytic virus...
22. (2 pts) The following step(s) occur in replication of both Bdellovibrio and a lytic virus such as T4, pathogens of E. coli. A. The genetic material of the pathogen is injected into the host cell B. The pathogen carbohydrates in the host to replicate itself. uses C. The host cell lyses, releasing the replicated pathogen D. The host cell DNA polymerase replicates the pathogen genome. 23. (2 pts) Phage are composed of nucleic acid and protein. Which of the...
27. When mixed with their host m and plated on solid agar, lytic phage will form...
27. When mixed with their host m and plated on solid agar, lytic phage will form clear areas in the bacterial growth. These clear areas are called plaques. What does the plaque assay determine? A) number of bacteriophage in a sample B) type of bacteriophage in a sample C) if the phage is a lysogenic phage D) if the virus can grow in a live animal host E) if a given drug will be useful in treating a given viral...
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: glucose levels have increased glucose levels have decreased lactose levels have increased lactose levels have decreased transcription of lacZ will likely increase transcription of lacZ will likely decrease
Identify the downstream effects of the following mutations in lambda phage. Explain how each mutation would...
Identify the downstream effects of the following mutations in lambda phage. Explain how each mutation would then favor the lysogenic or lytic cycles: A) mutation on the cIII gene. B) A mutation on PRM, C) A mutation on the N gene
Question 12 2 pts What is the role of CAMP in regulation of the lactose operon?...
Question 12 2 pts What is the role of CAMP in regulation of the lactose operon? CAMP is a repressor of the lactose operon and turns off gene expression of the lactose operon CAMP is an activator and prevents the repressor protein from binding to the operator region of the operon which allows for the lactose operon to be turned "on". 5 CAMP is an inducer of the lactose operon and also an activator since it prevents the repressor protein...
which of the following regarding transposition is true Which of the following regarding Transposition is TRUE?...
which of the following regarding transposition is true
Which of the following regarding Transposition is TRUE? Transpositon requires the Ffactor. Transposition is a form of horizontal DNA transfer through the cutting and relocation of genetic material from one cell to another. Transposition is a form of genetic change and amplification, Transposition requires a sex pilus. The main difference between genetic replication and transposition is genetic material is duplicated during replication and is only moved during transposition Which of the following...
all please 27. Which of the following is not a mode of action of antivirals? A)...
all
please
27. Which of the following is not a mode of action of antivirals? A) block penetration; B) block transcription and translation; C) inhibit DNA synthesis; D) block maturation; E) bind to ergosterol 28. Lysogeny is A) an infection by alytic phage; B) a condition when a viral genome is integrated into the host chromosome but does not result in the lysis of the host cell; C) when the infecting phage exists as a prophage; D) caused by a...
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...
ach) 1. Which of the following statements correctly describes one replication? characteristic of the lytic cycle of viral Many bacterial cells containing viral DNA are produced 8) Viral DNA is incorporated into the host genome C) Th e viral genome replicates without destroying the host The bacterial host provides the nucleotides, enzymes, ribosomes and other co requires to make viral components D) 2. What is the function of the viral glycoproteins that are present in an enveloped virus? A) They...
22. (2 pts) The following step(s) occur in replication of both Bdellovibrio and a lytic virus such as T4, pathogens of E. coli. A. The genetic material of the pathogen is injected into the host cell B. The pathogen carbohydrates in the host to replicate itself. uses C. The host cell lyses, releasing the replicated pathogen D. The host cell DNA polymerase replicates the pathogen genome. 23. (2 pts) Phage are composed of nucleic acid and protein. Which of the...
27. When mixed with their host m and plated on solid agar, lytic phage will form clear areas in the bacterial growth. These clear areas are called plaques. What does the plaque assay determine? A) number of bacteriophage in a sample B) type of bacteriophage in a sample C) if the phage is a lysogenic phage D) if the virus can grow in a live animal host E) if a given drug will be useful in treating a given viral...
Question 12 2 pts What is the role of CAMP in regulation of the lactose operon? CAMP is a repressor of the lactose operon and turns off gene expression of the lactose operon CAMP is an activator and prevents the repressor protein from binding to the operator region of the operon which allows for the lactose operon to be turned "on". 5 CAMP is an inducer of the lactose operon and also an activator since it prevents the repressor protein...
which of the following regarding transposition is true
Which of the following regarding Transposition is TRUE? Transpositon requires the Ffactor. Transposition is a form of horizontal DNA transfer through the cutting and relocation of genetic material from one cell to another. Transposition is a form of genetic change and amplification, Transposition requires a sex pilus. The main difference between genetic replication and transposition is genetic material is duplicated during replication and is only moved during transposition Which of the following...
all
please
27. Which of the following is not a mode of action of antivirals? A) block penetration; B) block transcription and translation; C) inhibit DNA synthesis; D) block maturation; E) bind to ergosterol 28. Lysogeny is A) an infection by alytic phage; B) a condition when a viral genome is integrated into the host chromosome but does not result in the lysis of the host cell; C) when the infecting phage exists as a prophage; D) caused by a...
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