Homework Answers
Answer:
RNA bound to telomerase
Telomerase uses a segment of its RNA as the template to add multiple copies of a simple sequence to the 3' end of each strand of DNA on a linear chromosome. This strand is copied by the normal mechanism of lagging strand synthesis after it is extended by telomerase.
Telomerase is a specialized reverse transcriptase that is essential for telomere maintenance. The telomerase ribonucleoprotein (RNP) uses an internal RNA template to synthesize telomeric repeat sequences onto chromosome ends.
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QUESTION 4 Which of the following provides the free 3'-OH group for DNA polymerase to fill...
Which of the following statements about eukaryotic DNA replication is false? A) DNA polymerase can add...
Which of the following statements about eukaryotic DNA replication is false? A) DNA polymerase can add new nucleotides to either free 3'- or 5'-end B) RNA primers must be removed and rejected by the deoxynucleotides C) RNA primers must be laid down during DNA replication for synthesis of new DNA that starts at the 3'-OH of the primer ends D) Elongation of the DNA strand during replication requires primers with free 3'OH end E) The very end of the chromosome...
Question 10 A human chromosome has 3 origins of replication. Assuming that all 3 origins of...
Question 10 A human chromosome has 3 origins of replication. Assuming that all 3 origins of replication are used at the same time, what is the maximum number of helicases present on DNA during DNA replication (not including DNA repair)? 12 O 3 O2 Question 11 Which of the following correctly compares primase and telomerase? O Both primase and telomerase synthesize DNA using a DNA template. O Primase synthesizes RNA using an RNA template, but telomerase synthesizes DNA using a...
In rho-dependent transcription termination: the formation of a hairpin in the transcribed mRNA causes RNA polymerase...
In rho-dependent transcription termination: the formation of a hairpin in the transcribed mRNA causes RNA polymerase to pause, facilitating termination. rho binds the mRNA, and when it makes contact with RNA polymerase, it assists with the removal of the mRNA from the DNA template. the rho factor binds to the -10 consensus sequence located in the promoter region to terminate transcription. a site within the poly(A) tail is cleaved which signals termination. the 3' untranslated region (3" UTR) is synthesized....
Question 1 Which of the following pairs is mismatched? DNA polymerase makes a molecule of DNA...
Question 1 Which of the following pairs is mismatched? DNA polymerase makes a molecule of DNA from a DNA template O DNA ligase joins segments of DNA O Primase incorporates an RNA primer RNA polymerase makes a molecule of RNA from an RNA template O Helicase separates complementary strands of DNA
If the sequence of the 5'-3'DNA strand is AATGCTAC, then the complementary DNA sequence has the...
If the sequence of the 5'-3'DNA strand is AATGCTAC, then the complementary DNA sequence has the following sequence o 3-AATGCTAC-5' 3'-CATCGTAA-5 3-GTAGCATT-5 3-TTACGATG-5 Question 2 20 pts Which of the following does the enzyme primase make? phosphodiester linkages (bonds) Okazaki fragments RNA primer DNA primer In which direction does DNA replication take place? 3'to 5 5'to 5 5'to 3 3'to 3 Question 4 20 pts Which enzyme unwinds the double-stranded helical DNA starting at the origin of replication? ligase primase...
The following diagram represents a replication bubble. The grey circles represents 4 molecules of DNA polymerase...
The following diagram represents a replication bubble. The grey circles represents 4 molecules of DNA polymerase Ill siting on a template strand and ready to add new nucleotides to the RNA primers (not shown). Which of the 4 DNA pol III molecules will create okazaki fragments? - A B 5' 3' - D Select one: a. B and C b. A and B c. A and D d. Only A e. C and D
Which of the following is a chemical or structural characteristic of RNA? The RNA sugar is...
Which of the following is a chemical or structural characteristic of RNA? The RNA sugar is ribose, which has an OH group on the 2' carbon. O RNA is usually a single-stranded molecule. The bases in RNA include uracil instead of thymine. RNA molecules are generally shorter in length compared DNA macromolecules. All of the above are either a chemical or structural characteristic of RNA. Which of these sequences could form a hairpin? 5' GGGGTTTTCCCC 3' 5' AAAAAAAAAAAA 3' 5'...
Vocabulary: DNA Replication
Vocabulary: DNA Replication A. Helicase B. Primase C. Single Strand Binding Protein (SSB) D. Topoisomerase E. Origin of Replication F. DNA Polymerase G. Leading Strand H. Lagging strand I. DNA Ligase J. Okazaki Fragment K. Replication Fork L. RNA Primer M. Topoisomerase .1. Site where the replication of a DNA molecule begins. 2. The new continuous complementary DNA strand synthesized in the direction for the replication fork. 3. A discontinuously synthesized DNA strand that elongates in a direction away from the replication fork 4. Relaxes...
The following diagram represents a replication bubble associated with DNA synthesis. Based on this diagram, select...
The following diagram represents a replication bubble associated
with DNA synthesis. Based on this diagram, select all of the
options below that are true.
1 | 2 ---- Quadrants 1 and 4 are associated with lagging strand synthesis Quadrants 1 and 4 are associated with leading strand synthesis Quadrants 1 and 2 are associated with lagging strand synthesis Quadrants 3 and 4 are associated with lagging strand synthesis Synthesis of both daughter strands is completely continuous Telomerase activity is needed...
Which of the following statements is FALSE? Nucleotides are only ever linked to one another 5’...
Which of the following statements is FALSE? Nucleotides are only ever linked to one another 5’ to 3’ DNA can contain Uracil as a result of a chemical reaction MutS/MutL only works to repair the lagging strand of synthesis Alternative splicing happens in every eukaryotic gene All of these statements are false The protein that phosphorylates the CTD to initiate transcription is called EF-Tu eIF4 TFIID TFIIH RNA polymerase Which of these enzymatic activities in DNA replication require the input...
Question 10 A human chromosome has 3 origins of replication. Assuming that all 3 origins of replication are used at the same time, what is the maximum number of helicases present on DNA during DNA replication (not including DNA repair)? 12 O 3 O2 Question 11 Which of the following correctly compares primase and telomerase? O Both primase and telomerase synthesize DNA using a DNA template. O Primase synthesizes RNA using an RNA template, but telomerase synthesizes DNA using a...
In rho-dependent transcription termination: the formation of a hairpin in the transcribed mRNA causes RNA polymerase to pause, facilitating termination. rho binds the mRNA, and when it makes contact with RNA polymerase, it assists with the removal of the mRNA from the DNA template. the rho factor binds to the -10 consensus sequence located in the promoter region to terminate transcription. a site within the poly(A) tail is cleaved which signals termination. the 3' untranslated region (3" UTR) is synthesized....
Question 1 Which of the following pairs is mismatched? DNA polymerase makes a molecule of DNA from a DNA template O DNA ligase joins segments of DNA O Primase incorporates an RNA primer RNA polymerase makes a molecule of RNA from an RNA template O Helicase separates complementary strands of DNA
If the sequence of the 5'-3'DNA strand is AATGCTAC, then the complementary DNA sequence has the following sequence o 3-AATGCTAC-5' 3'-CATCGTAA-5 3-GTAGCATT-5 3-TTACGATG-5 Question 2 20 pts Which of the following does the enzyme primase make? phosphodiester linkages (bonds) Okazaki fragments RNA primer DNA primer In which direction does DNA replication take place? 3'to 5 5'to 5 5'to 3 3'to 3 Question 4 20 pts Which enzyme unwinds the double-stranded helical DNA starting at the origin of replication? ligase primase...
The following diagram represents a replication bubble. The grey circles represents 4 molecules of DNA polymerase Ill siting on a template strand and ready to add new nucleotides to the RNA primers (not shown). Which of the 4 DNA pol III molecules will create okazaki fragments? - A B 5' 3' - D Select one: a. B and C b. A and B c. A and D d. Only A e. C and D
Which of the following is a chemical or structural characteristic of RNA? The RNA sugar is ribose, which has an OH group on the 2' carbon. O RNA is usually a single-stranded molecule. The bases in RNA include uracil instead of thymine. RNA molecules are generally shorter in length compared DNA macromolecules. All of the above are either a chemical or structural characteristic of RNA. Which of these sequences could form a hairpin? 5' GGGGTTTTCCCC 3' 5' AAAAAAAAAAAA 3' 5'...
The following diagram represents a replication bubble associated
with DNA synthesis. Based on this diagram, select all of the
options below that are true.
1 | 2 ---- Quadrants 1 and 4 are associated with lagging strand synthesis Quadrants 1 and 4 are associated with leading strand synthesis Quadrants 1 and 2 are associated with lagging strand synthesis Quadrants 3 and 4 are associated with lagging strand synthesis Synthesis of both daughter strands is completely continuous Telomerase activity is needed...
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