Homework Answers
Solution
The answer is option A. Represses transcription. It inhibits the binding of binding factors to DNA.
Option B is wrong because DNA methylation represses transcription.
Option C is wrong because it regulates transcription.
Option D is wrong because only Option A is correct.
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QUESTION 5 In what way does DNA methylation typically regulate transcription? A. Represses transcription. B. Activates...
Explain how DNA methylation could be used to regulate gene expression in a tissue-specific way. When...
Explain how DNA methylation could be used to regulate gene expression in a tissue-specific way. When and where would de novo methylation occur, and when would demethylaiton occur? What would occur in the cells that give rise to eggs and sperm (germ-line cells)
Two identical twins who showed very similar methylation patterns when they were 4 years old show...
Two identical twins who showed very similar methylation patterns when they were 4 years old show very divergent patterns at age 40. This divergence is most likely due to a different alternative splicing in the two individuals Ob different levels of histone acetyltransferase in the two individuals. Oc environmental differences that they experienced as adults. O d. different genomic imprinting in the two individuals. O e differences in their experiences in utero Suppose that a certain enzyme is synthesized whenever...
Question 11 Question 11 ???????? In the absence of arabinose, the regulatory protein AraC a forms...
Question 11
Question 11 ???????? In the absence of arabinose, the regulatory protein AraC a forms a dimer, binds to two regulatory sequences near the promoter, and activates transcription of the arabinose operon structural genes. b forms a dimer, binds to two distant sites, and forms a DNA loop that blocks access of RNA polymerase to the arabinose operon promoter. c binds to the arabinose operator and represses transcription of the arabinose operon structural genes. d binds to the arabinose...
ton is not an energy dependent process in (B)) Falls eukaryotes 43. Histone methylation is associated...
ton is not an energy dependent process in (B)) Falls eukaryotes 43. Histone methylation is associated with Falls gene activation gene silencing Following histones are required during transcription (A) H2A and 2B (B) H3 (C) H4 (D) All of the above (E) H2AZ (c) induction (D) All of the above (E) None of the above 35. 4. DNA methylation silences gene expression AD True (B) Fall Leucine residues in lucine zipper proteins provides h ydrophobic interaction for dimerization (A) True...
QUESTION 2 Which of the following statement is true for both DNA replication and transcription? A....
QUESTION 2 Which of the following statement is true for both DNA replication and transcription? A. Both polymerases catalyze the formation of phosphodiester bonds between nucleotides. B. Primers are required to provide 3'-OH group for both polymerases to initiate the synthesis of DNA or RNA. C. DNA and RNA synthesis both proceed in a 5' to 3' direction or, in other words, nucleotides are added to the 3'- OH groups of the growing chains. D. Two of the above. O...
Which does not affect gene expression at the post-transcriptional level? Choose one: O A. DNA methylation...
Which does not affect gene expression at the post-transcriptional level? Choose one: O A. DNA methylation O B. small interfering RNAs O C. microRNAs O D. nucleotide sequences in the untranslated regions of an mRNA
Which of the following would prevent transcriptional activators from binding? A. Increased DNA methylation B. Increased...
Which of the following would prevent transcriptional activators from binding? A. Increased DNA methylation B. Increased nucleosome abundance C. BOTH (A) and (B) D. NEITHER (A) or (B)
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...
Choose all that apply to the initiation of transcription Promoter segments Ribosome tRNA DNA polymerase Transcription...
Choose all that apply to the initiation of transcription Promoter segments Ribosome tRNA DNA polymerase Transcription factors Question 25 (4 points) Saved Choose all the molecules that are used in transcription: a) primase b) DNA c) nucleotides d) RNA polymerase e) SSB (single strand binding protein)
Considering information flow in the cell, which of the following does not depend on base pairing?...
Considering information flow in the cell, which of the following does not depend on base pairing? a. DNA replication b. Reverse transcription c. Translation d. DNA methylation e. All of these depend on base pairing.
Two identical twins who showed very similar methylation patterns when they were 4 years old show very divergent patterns at age 40. This divergence is most likely due to a different alternative splicing in the two individuals Ob different levels of histone acetyltransferase in the two individuals. Oc environmental differences that they experienced as adults. O d. different genomic imprinting in the two individuals. O e differences in their experiences in utero Suppose that a certain enzyme is synthesized whenever...
Question 11
Question 11 ???????? In the absence of arabinose, the regulatory protein AraC a forms a dimer, binds to two regulatory sequences near the promoter, and activates transcription of the arabinose operon structural genes. b forms a dimer, binds to two distant sites, and forms a DNA loop that blocks access of RNA polymerase to the arabinose operon promoter. c binds to the arabinose operator and represses transcription of the arabinose operon structural genes. d binds to the arabinose...
ton is not an energy dependent process in (B)) Falls eukaryotes 43. Histone methylation is associated with Falls gene activation gene silencing Following histones are required during transcription (A) H2A and 2B (B) H3 (C) H4 (D) All of the above (E) H2AZ (c) induction (D) All of the above (E) None of the above 35. 4. DNA methylation silences gene expression AD True (B) Fall Leucine residues in lucine zipper proteins provides h ydrophobic interaction for dimerization (A) True...
QUESTION 2 Which of the following statement is true for both DNA replication and transcription? A. Both polymerases catalyze the formation of phosphodiester bonds between nucleotides. B. Primers are required to provide 3'-OH group for both polymerases to initiate the synthesis of DNA or RNA. C. DNA and RNA synthesis both proceed in a 5' to 3' direction or, in other words, nucleotides are added to the 3'- OH groups of the growing chains. D. Two of the above. O...
Which does not affect gene expression at the post-transcriptional level? Choose one: O A. DNA methylation O B. small interfering RNAs O C. microRNAs O D. nucleotide sequences in the untranslated regions of an mRNA
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...
Choose all that apply to the initiation of transcription Promoter segments Ribosome tRNA DNA polymerase Transcription factors Question 25 (4 points) Saved Choose all the molecules that are used in transcription: a) primase b) DNA c) nucleotides d) RNA polymerase e) SSB (single strand binding protein)
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