The genome diagram in question 3 shows the attP sequence (above the green repressor gene). The...
The genome diagram in question 3 shows the attP sequence (above the green repressor gene). The attP sequence is the phage genome sequence that recombines with the bacterial host chromosome during the lysogenic cycle. Which phage protein is required for this recombination
A) repressor
B) holin
C) terminase
D) recombination directionality factor (RDF)
E) integrase
Homework Answers
Integrase (E)
Note: Phage integrases are categorized as tyrosine or serine integrases based on their mode of catalysis. They mediate recombination between short sequences of DNA (attP, the phage attachment site).
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The genome diagram in question 3 shows the attP sequence (above
the green repressor gene). The...
ΦC31 is a type of bacteriophage that infects Streptomyces bacteria. One gene in the bacteriophage genome...
ΦC31 is a type of bacteriophage that infects Streptomyces bacteria. One gene in the bacteriophage genome specifies a recombinase called ΦC31 integrase that works through a mechanism slightly different from that of the recombinase shown in Fig. 6.30. Most importantly, the two target DNA sequences are different from each other. One called attP is 39 base pairs and is found on the circular bacteriophage chromosome, while the other—attB—is 34 base pairs long and is located on the much larger circular...
Notice that the genes for lysogeny are clustered in an operon on the "left" side of...
Notice that the genes for lysogeny are clustered in an operon on
the "left" side of the phage plasmid, while the genes for lysis are
clustered in an operon on the "right" side of the plasmid.
At the beginning of each infection, transcription begins at two
"early" promoters.
"Leftward" genes
Early promoter PLcontrols leftward
transcription of early genes, beginning with the N gene.
The N protein plays an anti-termination role in transcription from
PL. Leftward transcription is also enhanced by...
Instructions: Read each question carefully before selecting the one alternative that best completes the statement or...
Instructions: Read each question carefully before selecting the one alternative that best completes the statement or answers the question in each case and then indicate it on the answer card. Work at a steady pace and you should have ample time to finish the examination. MULTIPLE CHOICE (2 points each) chi Which group of organisms other than viruses is represented by the most number of individuals on earth? Insects b. Bacteria Archea d. Rats e. Earthworms c. A quaint bacteria...
Answer the questions: Question 1 Transcription begins at the..... a. operon o b. repressor c. genome...
Answer the questions:
Question 1 Transcription begins at the..... a. operon o b. repressor c. genome 17d. promoter Question 2 0.5 points Save RNA is synthesized on a DNA template in a process called replication, DNA polymerase translation, RNA polymerase transcription, RNA polymerise t ranscription, DNA polymerase Question 3 Which eukaryotic RNA polymerase makes tRNA's? a RNA polymerase IIIb. Any of these RNA polymerase I od RNA polymerase II A Moving to another question will save this response. Question 4...
QUESTION 34 In Hfr strains, the F plasmid is attached to a phage attached to the...
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all them please Question 23 (1 point) The A and B alleles in ABO blood types...
all them please
Question 23 (1 point) The A and B alleles in ABO blood types can give rise to an individual that is blog type AB. This specific blood type is an example of: A) multiple alleles B) epistasis C) codominance D) partial dominance Imagine the gene encoding the lac repressor was mutated so that lactose (more technically allolactose) no longer bound to the repressor. However, the lac repressor was still capable of binding DNA at the operator sequence....
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is...
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A cell's genome is its blueprint for life. However, what is the bare minimum number of...
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Under which of the fol le following conditions will the repressor pro 8. Which of the...
Under which of the fol le following conditions will the repressor pro 8. Which of the fo Lactose present/glucose present Lactose presentelucose absent Lactose absentelucose present 9. Under both conditions A and B c. Under none of the above conditions of the following is involved in regulation of the lac operon? repressor protein b. operator sequence (0) allolactose d. answers A and B are both correct s, all of the above are correct Which of the following statements regarding DNA...
QUESTION 12 The first step in the infection cycle of a virus is replication of its...
QUESTION 12 The first step in the infection cycle of a virus is replication of its genome degradation of the host genome lysis of the host cell attachment to the host cell surface QUESTION 13 Which of the following is NOT a true statement about regulons? Regulons are known to be under positive and negative control Regulons are only known to be under positive control. A regulon describes two or more operons that are under the control of the same...
Notice that the genes for lysogeny are clustered in an operon on
the "left" side of the phage plasmid, while the genes for lysis are
clustered in an operon on the "right" side of the plasmid.
At the beginning of each infection, transcription begins at two
"early" promoters.
"Leftward" genes
Early promoter PLcontrols leftward
transcription of early genes, beginning with the N gene.
The N protein plays an anti-termination role in transcription from
PL. Leftward transcription is also enhanced by...
Instructions: Read each question carefully before selecting the one alternative that best completes the statement or answers the question in each case and then indicate it on the answer card. Work at a steady pace and you should have ample time to finish the examination. MULTIPLE CHOICE (2 points each) chi Which group of organisms other than viruses is represented by the most number of individuals on earth? Insects b. Bacteria Archea d. Rats e. Earthworms c. A quaint bacteria...
Answer the questions:
Question 1 Transcription begins at the..... a. operon o b. repressor c. genome 17d. promoter Question 2 0.5 points Save RNA is synthesized on a DNA template in a process called replication, DNA polymerase translation, RNA polymerase transcription, RNA polymerise t ranscription, DNA polymerase Question 3 Which eukaryotic RNA polymerase makes tRNA's? a RNA polymerase IIIb. Any of these RNA polymerase I od RNA polymerase II A Moving to another question will save this response. Question 4...
QUESTION 34 In Hfr strains, the F plasmid is attached to a phage attached to the cell wall free in the cytoplasm integrated into the chromosome QUESTION 35 Which of the following is NOT a molecule found during DNA replication? mRNA DNA polymerase 1 helicase ORNA primer Click Save and Submit to save and submit. Click Save All Answers to save all answers. ch.16 PT AP n...ot a ch. 18 PPT AP noppbe ch 17 PPT AP n. e @...
all them please
Question 23 (1 point) The A and B alleles in ABO blood types can give rise to an individual that is blog type AB. This specific blood type is an example of: A) multiple alleles B) epistasis C) codominance D) partial dominance Imagine the gene encoding the lac repressor was mutated so that lactose (more technically allolactose) no longer bound to the repressor. However, the lac repressor was still capable of binding DNA at the operator sequence....
Under which of the fol le following conditions will the repressor pro 8. Which of the fo Lactose present/glucose present Lactose presentelucose absent Lactose absentelucose present 9. Under both conditions A and B c. Under none of the above conditions of the following is involved in regulation of the lac operon? repressor protein b. operator sequence (0) allolactose d. answers A and B are both correct s, all of the above are correct Which of the following statements regarding DNA...
QUESTION 12 The first step in the infection cycle of a virus is replication of its genome degradation of the host genome lysis of the host cell attachment to the host cell surface QUESTION 13 Which of the following is NOT a true statement about regulons? Regulons are known to be under positive and negative control Regulons are only known to be under positive control. A regulon describes two or more operons that are under the control of the same...
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