Which statement about RNA polymerases is false? They require a divalent cation for activity They can...
Which statement about RNA polymerases is false?
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They require a divalent cation for activity |
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They can unwind short stretches of DNA |
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They read DNA 3'-5' and synthesize DNA 5'-3' |
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They lack 3'-5' exonuclease activity |
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All statements are true |
Homework Answers
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Which statement about RNA polymerases is false?
They require a divalent cation for activity
They can...
Which of the following statements in NOT true about DNA replication? DNA replication involves synthesis of...
Which of the following statements in NOT true about DNA replication? DNA replication involves synthesis of multiple RNA primers DNA ligase is needed for successful DNA replication DNA replication requires deoxyribonucleotide triphosphates High fidelity of DNA replication is ensured by 5-3' exonuclease activity of DNA polymerase High fidelity of DNA replication is ensured by 3-5' exonuclease activity of DNA polymerases Next
Which of the following statements in NOT true about DNA replication? DNA replication involves synthesis of...
Which of the following statements in NOT true about DNA replication? DNA replication involves synthesis of multiple RNA primers DNA ligase is needed for successful DNA replication DNA replication requires deoxyribonucleotide triphosphates High fidelity of DNA replication is ensured by 5-3 exonuclease activity of DNA polymerase High fidelity of DNA replication is ensured by 3-5' exonuclease activity of DNA polymerases Next
Question 5 4 pts Which of the following statements in NOT true about DNA replication? DNA...
Question 5 4 pts Which of the following statements in NOT true about DNA replication? DNA replication involves synthesis of multiple RNA primers DNA ligase is needed for successful DNA replication DNA replication requires deoxyribonucleotide triphosphates High fidelity of DNA replication is ensured by 5-3 exonuclease activity of DNA polymerase ! High fidelity of DNA replication is ensured by 3-5 exonuclease activity of DNA polymerases Next
I. True or False, 25 points (5 each), Read the following statements and indicate whether the statement is true or false. For extra credit (5 points each) explain how the false statements are not...
I. True or False, 25 points (5 each), Read the following statements and indicate whether the statement is true or false. For extra credit (5 points each) explain how the false statements are not true. 3. DNA polymerase I performs proofreading by requiring a higher concentration of the next dNTP following a mismatch, allowing time for unwinding of the nascent duplex and 3 5' exonuclease digestion. 4. The DNA duplex of the genome is flexible enough to allow many values...
1) Which of the following is FALSE about RNA polymerase?It does NOT require a primer to...
1) Which of the following is FALSE about RNA polymerase?It does NOT require a primer to begin synthesis It synthesizes RNA 5’ to 3’ It catalyzes the formation of phosphodiester bonds It only transcribes one of the two DNA strands for any particular gene It only transcribes exons 2)Which of the following is not synthesized from, or does not use DNA as a template? Introns Poly A tail Ribosomal binding site Primase RNA polymerase 3) Which of the following is...
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms?...
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms? They have the same number of cofactors in prokaryotes and eukaryotes. They are composed of an analogous a 2ßß'w core. They make copies of RNA from either DNA or RNA templates. There is a single enzyme type per organism. Question 17 1 pts What are E. coli sigma (o) subunits in RNA synthesis? transcription factors receptor proteins RNA polymerases ODNA promoter regions Question 11...
Enter the appropriate word or words into each blank to complete the following statements about RNA...
Enter the appropriate word or words into each blank to complete the following statements about RNA synthesis. A. DNA sequence that directs binding of RNA polymerase for transcription of a downstream gene is called a direction B. Synthesis of DNA and RNA molecules always proceeds in the C. During transcription of eukaryotic genes, intron sequences are removed from the new RNA molecule, while are stitched together during the process called D. Mature eukaryotic messenger RNAS (MRNA8) have a 5'- and...
29. The initiator RNA attaches at the ribosome's site. A. A B. translocon C. E DP...
29. The initiator RNA attaches at the ribosome's site. A. A B. translocon C. E DP E. O 30. Which one of the following, if missing, would usually prevent translation from starting? A. one of several exons in a mRNA B. poly-A tail C. AUG codon D. spliceosome E. RNA polymerase 31. Which of the following statements about DNA synthesis is true? A. Nucleotides are added in a random fashion to single-stranded DNA. B. DNA polymerase adds dNTP monomers in...
Which statement is correct for biological DNA replication? Select one: a. DNA polymerases always require a...
Which statement is correct for biological DNA replication? Select one: a. DNA polymerases always require a primer. b. It needs the single strand binding proteins. c. DNA replication starts at the Ori sequence. d. DnaA is a protein which steadily accumulates to trigger DNA replication in E.coli. e. All of these
Which of the following statements is true? A. RNA polymerase has a proofreading activity B. Prokaryotic...
Which of the following statements is true? A. RNA polymerase has a proofreading activity B. Prokaryotic RNA usually undergoes nuclear processing C. Polypeptides are synthesized by addition of amino acids to the amino terminus. D. The 3' end of mRNA corresponds to the carboxyl terminus of the protein. Grade 2. Which of the following A. It may be autocatalytic. B. Spliceosomes are present in organelles and nuclei C. It involves removal of exons is true regarding RNA processing? D. It...
Which of the following statements in NOT true about DNA replication? DNA replication involves synthesis of multiple RNA primers DNA ligase is needed for successful DNA replication DNA replication requires deoxyribonucleotide triphosphates High fidelity of DNA replication is ensured by 5-3' exonuclease activity of DNA polymerase High fidelity of DNA replication is ensured by 3-5' exonuclease activity of DNA polymerases Next
Which of the following statements in NOT true about DNA replication? DNA replication involves synthesis of multiple RNA primers DNA ligase is needed for successful DNA replication DNA replication requires deoxyribonucleotide triphosphates High fidelity of DNA replication is ensured by 5-3 exonuclease activity of DNA polymerase High fidelity of DNA replication is ensured by 3-5' exonuclease activity of DNA polymerases Next
Question 5 4 pts Which of the following statements in NOT true about DNA replication? DNA replication involves synthesis of multiple RNA primers DNA ligase is needed for successful DNA replication DNA replication requires deoxyribonucleotide triphosphates High fidelity of DNA replication is ensured by 5-3 exonuclease activity of DNA polymerase ! High fidelity of DNA replication is ensured by 3-5 exonuclease activity of DNA polymerases Next
I. True or False, 25 points (5 each), Read the following statements and indicate whether the statement is true or false. For extra credit (5 points each) explain how the false statements are not true. 3. DNA polymerase I performs proofreading by requiring a higher concentration of the next dNTP following a mismatch, allowing time for unwinding of the nascent duplex and 3 5' exonuclease digestion. 4. The DNA duplex of the genome is flexible enough to allow many values...
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms? They have the same number of cofactors in prokaryotes and eukaryotes. They are composed of an analogous a 2ßß'w core. They make copies of RNA from either DNA or RNA templates. There is a single enzyme type per organism. Question 17 1 pts What are E. coli sigma (o) subunits in RNA synthesis? transcription factors receptor proteins RNA polymerases ODNA promoter regions Question 11...
Enter the appropriate word or words into each blank to complete the following statements about RNA synthesis. A. DNA sequence that directs binding of RNA polymerase for transcription of a downstream gene is called a direction B. Synthesis of DNA and RNA molecules always proceeds in the C. During transcription of eukaryotic genes, intron sequences are removed from the new RNA molecule, while are stitched together during the process called D. Mature eukaryotic messenger RNAS (MRNA8) have a 5'- and...
29. The initiator RNA attaches at the ribosome's site. A. A B. translocon C. E DP E. O 30. Which one of the following, if missing, would usually prevent translation from starting? A. one of several exons in a mRNA B. poly-A tail C. AUG codon D. spliceosome E. RNA polymerase 31. Which of the following statements about DNA synthesis is true? A. Nucleotides are added in a random fashion to single-stranded DNA. B. DNA polymerase adds dNTP monomers in...
Which of the following statements is true? A. RNA polymerase has a proofreading activity B. Prokaryotic RNA usually undergoes nuclear processing C. Polypeptides are synthesized by addition of amino acids to the amino terminus. D. The 3' end of mRNA corresponds to the carboxyl terminus of the protein. Grade 2. Which of the following A. It may be autocatalytic. B. Spliceosomes are present in organelles and nuclei C. It involves removal of exons is true regarding RNA processing? D. It...
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