Please explain why your choice is correct.
Homework Answers
Ans d.
Bacteriophage T4 early promoters are utilized immediately after infection and they are abruptly turned off 2-3 minutes later when the middle promoters are activated. Early promoters contains two conserved hexamers , they are recognized by the major host sigma factor.
Hence, only early genes in the phage will be expressed and not late genes.
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Please explain why your choice is correct.
6. If a double-strand DNA phage that specified its...
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...
Only answers please don’t show work 33) Viral DNA incorporated into host cell DNA is known...
Only answers please don’t show work
33) Viral DNA incorporated into host cell DNA is known as a/an A) phage. B) envelope C) capsid. 33) 34) How is transformation in bacteria most A) the creation of a strand of RNA from DNA molecule B) the type of semiconservative by DNA C) the infection of cells by a phage DNA molecule D) the e of a strand of DNA from an RNA molecule E) assimilation of external DNA into a cell...
28 29 30 31 32 33 28. Genes found in segments of chromosome called heterochromatin would...
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28. Genes found in segments of chromosome called heterochromatin would likely be expressed at high levels. expressed at low levels, or not at all. deleted before replication. maternally inherited only. none of these 29. (Use this representation to answer the following question.) DNA template strand 5 3' DNA complementary strand 3' 5' Using the double-stranded molecule above, in which direction does the RNA polymerase enzyme move? 3' → 5' along the template strand 5'...
1. An enzyme used to covalently join DNA segments to form recombinant DNA molecules is called...
1. An enzyme used to covalently join DNA segments to form recombinant DNA molecules is called a A. Restriction endonuclease B. Reverse transcriptase C. DNA polymerase D. Helicase E. Ligase 7. The procedure for introducing changes into specific genes is called A. An enhancer trap B. Imprinting C. RT-PCR D. DNA looping E. Gene targeting 2. Plasmids used for in vitro cloning of foreign DNA fragments are called A. Donors B. DNA chips C. Clones D. Vectors E. Conjugants 8....
QUESTIONS During replication the protein that keeps the two stands of DNA from popping back together...
QUESTIONS During replication the protein that keeps the two stands of DNA from popping back together is called Gene Semiconservative SSB Single Stranded Binding Protein ODNA polymerase QUESTION 2 Tachnow molecule of DNA is a double he which is made up of O two new stands of DNA one new strand and one old strand of DNA two old stands of DNA o the new strands of DNA QUESTIONS QUESTION 19 The process of synthesizing RNA from a specific sequence...
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...
Question 14 1 points Save Answer DNA replication poses several challenges to the cell that must...
Question 14 1 points Save Answer DNA replication poses several challenges to the cell that must be resolved for replication to proceed. All of the following are cellular solutions to the challenges posed by DNA replication except... O A. Helicase unwinds to the DNA to allow the replication fork to form. O B. Primase synthesizes an RNA primer since DNA polymerase can only extend an existing polynucleotide chain. O C. Higher eukaryotes utilize multiple origins of replication to reduce the...
UNIT V Chapter 12,13,814 WORKSHEET
UNIT V Chapter 12,13,814 WORKSHEET1. DNA geneA. Complementary to Cytosine2. Transcription 3. Sugar-Phosphate sackbone 4. IntronsB. With proteins makes up ribosomes5. Semi-conservative6. tRNA.E. Uprights (sides) of DNA "ladder"7. DNA Ligase.F. Part of a gene that gets spliced out during RNA processing G. Enzyme that joins lagging strand fragments of DNA or "sticky ends"9. Guanine?10. Anti-codon H. Molecule that carries amino acid to translation site1. New DNA contains one old and one new strand12. Nucleus 13. Point mutation 14. Deletion mutationA....
Why would changes in the genes for transcription factors be expected to generate major phenotypic differences?...
Why would changes in the genes for transcription factors be expected to generate major phenotypic differences? They are extremely powerful genes. They can affect the expression of small numbers of other genes. Their gene products are remarkably stable. Their gene products normally denature more rapidly than other gene products. They can affect the expression of large numbers of other genes. Which enzyme, also responsible for siRNA formation, carves miRNAs from their double-stranded, fold- back RNA precursor (pre-miRNA)? Dicer ribonuclease RNA...
DNA DNA Replication: ONA Because DNA Is the ge m Tumes and heart e ine in...
DNA DNA Replication: ONA Because DNA Is the ge m Tumes and heart e ine in process called DNA curs in the nucleus of s acest FS Parent strand Parent strand Newly replicated DNA Newly replicated DNA- SA0 Daughter DNA molecule Daughter DNA molecule Figure 8.2: Overview of DNA replication and illustration of complementary base pairing. DNA must replicate before cell division so that each new daughter cell receives an exact copy of the parent DNA. 1. Replication begins when...
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...
Only answers please don’t show work
33) Viral DNA incorporated into host cell DNA is known as a/an A) phage. B) envelope C) capsid. 33) 34) How is transformation in bacteria most A) the creation of a strand of RNA from DNA molecule B) the type of semiconservative by DNA C) the infection of cells by a phage DNA molecule D) the e of a strand of DNA from an RNA molecule E) assimilation of external DNA into a cell...
28
29
30
31
32
33
28. Genes found in segments of chromosome called heterochromatin would likely be expressed at high levels. expressed at low levels, or not at all. deleted before replication. maternally inherited only. none of these 29. (Use this representation to answer the following question.) DNA template strand 5 3' DNA complementary strand 3' 5' Using the double-stranded molecule above, in which direction does the RNA polymerase enzyme move? 3' → 5' along the template strand 5'...
1. An enzyme used to covalently join DNA segments to form recombinant DNA molecules is called a A. Restriction endonuclease B. Reverse transcriptase C. DNA polymerase D. Helicase E. Ligase 7. The procedure for introducing changes into specific genes is called A. An enhancer trap B. Imprinting C. RT-PCR D. DNA looping E. Gene targeting 2. Plasmids used for in vitro cloning of foreign DNA fragments are called A. Donors B. DNA chips C. Clones D. Vectors E. Conjugants 8....
QUESTIONS During replication the protein that keeps the two stands of DNA from popping back together is called Gene Semiconservative SSB Single Stranded Binding Protein ODNA polymerase QUESTION 2 Tachnow molecule of DNA is a double he which is made up of O two new stands of DNA one new strand and one old strand of DNA two old stands of DNA o the new strands of DNA QUESTIONS QUESTION 19 The process of synthesizing RNA from a specific sequence...
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...
Question 14 1 points Save Answer DNA replication poses several challenges to the cell that must be resolved for replication to proceed. All of the following are cellular solutions to the challenges posed by DNA replication except... O A. Helicase unwinds to the DNA to allow the replication fork to form. O B. Primase synthesizes an RNA primer since DNA polymerase can only extend an existing polynucleotide chain. O C. Higher eukaryotes utilize multiple origins of replication to reduce the...
UNIT V Chapter 12,13,814 WORKSHEET1. DNA geneA. Complementary to Cytosine2. Transcription 3. Sugar-Phosphate sackbone 4. IntronsB. With proteins makes up ribosomes5. Semi-conservative6. tRNA.E. Uprights (sides) of DNA "ladder"7. DNA Ligase.F. Part of a gene that gets spliced out during RNA processing G. Enzyme that joins lagging strand fragments of DNA or "sticky ends"9. Guanine?10. Anti-codon H. Molecule that carries amino acid to translation site1. New DNA contains one old and one new strand12. Nucleus 13. Point mutation 14. Deletion mutationA....
Why would changes in the genes for transcription factors be expected to generate major phenotypic differences? They are extremely powerful genes. They can affect the expression of small numbers of other genes. Their gene products are remarkably stable. Their gene products normally denature more rapidly than other gene products. They can affect the expression of large numbers of other genes. Which enzyme, also responsible for siRNA formation, carves miRNAs from their double-stranded, fold- back RNA precursor (pre-miRNA)? Dicer ribonuclease RNA...
DNA DNA Replication: ONA Because DNA Is the ge m Tumes and heart e ine in process called DNA curs in the nucleus of s acest FS Parent strand Parent strand Newly replicated DNA Newly replicated DNA- SA0 Daughter DNA molecule Daughter DNA molecule Figure 8.2: Overview of DNA replication and illustration of complementary base pairing. DNA must replicate before cell division so that each new daughter cell receives an exact copy of the parent DNA. 1. Replication begins when...
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