Genetics: Analysis and Principles
5th Edition
ISBN: 9780073525341
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 11.3, Problem 1COMQ
The enzyme known as ______ uses ________ and separates the DNA strands at the replication fork.
a. helicase, ATP
b. helicase, GTP
c. gyrase, ATP
d. gyrase, GTP
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The enzyme known as ________ uses ________ and separates the DNA strands at the replication fork.
a. helicase, ATP
b. helicase, GTP
c. gyrase, ATP
d. gyrase, GTP
The enzyme ________ separates the TWO DNA strands of the double helix.
a.
helicase
b.
ligase
c.
polymerase
Energy that drives the attachment of a nucleotide to the end of a growing strand of DNA comes from________ . a. the nucleotide c. DNA polymerase b. phosphate-group transfers from ATP
Chapter 11 Solutions
Genetics: Analysis and Principles
Ch. 11.1 - 1. The complementarity of DNA strands is based on...Ch. 11.1 - 2. To make a new DNA strand, which of the...Ch. 11.1 - 3. The model that correctly describes the process...Ch. 11.2 - 1. A site in a chromosome where DNA replication...Ch. 11.2 - The origin of replication in E. coli contains a....Ch. 11.3 - 1. The enzyme known as ______ uses ________ and...Ch. 11.3 - In the lagging strand, DNA is made in the...Ch. 11.4 - 1. DNA polymerase III is a processive enzyme,...Ch. 11.4 - 2. The proofreading function of DNA polymerase...Ch. 11.5 - 1. In eukaryotes, DNA replication is initiated at...
Ch. 11.5 - 2. Which of the following statements regarding DNA...Ch. 11.5 - 3. In eukaryotes, RNA primers are primarily...Ch. 11.5 - 4. To synthesize DNA, what does telomerase use as...Ch. 11 - What key structural features of the DNA molecule...Ch. 11 - 2. With regard to DNA replication, define the term...Ch. 11 - Which of the following statements is not true?...Ch. 11 - The compound known as nitrous acid is a reactive...Ch. 11 - One way that bacterial cells regulate DNA...Ch. 11 - 6. The chromosome of E. coli contains 4.6 million...Ch. 11 - Here are two strands of DNA. DNA polymerase The...Ch. 11 - A DNA strand has the following sequence:...Ch. 11 - 9. List and briefly describe the three types of...Ch. 11 - 10. As shown in Figure 11.5, five DnaA boxes are...Ch. 11 - 11. Obtain two strings of different colors (e.g.,...Ch. 11 - Sometimes DNA polymerase makes a mistake, and the...Ch. 11 - 13. A short genetic sequence, which may be...Ch. 11 - The ability of DNA polymerase to digest a DNA...Ch. 11 - Single-strand binding proteins keep the two...Ch. 11 - 15. In the following drawing, the top strand is...Ch. 11 - Describe the three important functions of DnaA...Ch. 11 - 17. Draw a picture that illustrates how DNA...Ch. 11 - What is an Okazaki fragment? In which strand of...Ch. 11 - Discuss the similarities and differences in the...Ch. 11 - 20. Explain the proofreading function of DNA...Ch. 11 - 21. What is a processive enzyme? Explain why...Ch. 11 - 22. What enzymatic features of DNA polymerase...Ch. 11 - 23. As shown in Figure 11.24, telomerase attaches...Ch. 11 - If a eukaryotic chromosome has 25 origins of...Ch. 11 - A diagram of a linear chromosome is shown here....Ch. 11 - As discussed in Chapter 18, some viruses contain...Ch. 11 - 28. Telomeres contain a 3′ overhang region, as...Ch. 11 - 1. Answer the following questions pertaining to...Ch. 11 - An absentminded researcher follows the steps of...Ch. 11 - Figure 11.4b shows an autoradiograph of a...Ch. 11 - 4. As described in Table 11.3, what is the...Ch. 11 - The technique of dideoxy sequencing of DNA is...Ch. 11 - 6. Another technique described in Chapter 21 is...Ch. 11 - The complementarity of its two strands is the...Ch. 11 - Compare and contrast DNA replication in bacteria...Ch. 11 - 3. DNA replication is fast, virtually error-free,...
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- Which molecule provides the energy for the assembly of new nucleotides into a DNA strand during DNA replication? a. ATP b. the nucleotide itself c. NADH d. primers e. DNA ligasearrow_forwardDNA replication is carried out by a ________ enzyme. a. Helicase b. Polymerase c. Kinase d. Topoisomerasearrow_forwardwhen a cell to divide, its DNA must be replicated (copied). a.List the most important participating components and their functions in replication b.why is it important that the replication goes right and that relatively few mutations occur during the replication? c.Will the offspring of the individual who received a mutation inherit the mutationarrow_forward
- Which of the following statements accurately describes the process of DNA replication? A. The two strands of DNA separate, and a single new strand is synthesized using the existing strand as a template. B. The two strands of DNA separate and serves as a template, and the daughter molecule will have a mix of an old and new strand. C. The two strands of DNA separate and serves as a template, and the daughter molecule will have one old strand and one new strand. D. The two strands of DNA separate, and each strand serves as a template for the synthesis of multiple new complementary strands.arrow_forwardWhich of the following enzymes is NOT involved in DNA replication? a. DNA Polymerase b. Primase c. Helicase d. Phosphatase e. DNA Ligasearrow_forwardWhich of the following BEST describes DNA replication? a. Conservative b. Semiconservative c. Discontinuous d. Destructivearrow_forward
- During DNA replication, the helicase enzyme binds to DNA and Select one: a. prevents the DNA strands from rewinding back into the helical shape b. cuts the double stranded DNA into single strands c. provides the starting point where new nucleotides can be added d. adds new nucleotides to the template strandarrow_forwardnew DNA molecule is precisely synthesized during the following EXCEPT? A.Trasformation B. Transcription C.Translation D.Replicationarrow_forwardHuman immunodeficiency virus (HIV) is the retrovirus that causes AIDS. AZT was one of the first drugs designed to interfere with retroviral DNA synthesis. When cells take up AZT, they convert it to AZT-triphosphate. Explain how AZT interferes with DNA synthesis.arrow_forward
- DNA ligase seals the “nick” between two Okazaki fragments using energy from which of the following? a.ATP or NAD b.GTP c.pyrophosphate released from the last nucleotide in the strand d. 3’OH on the last nucleotide in the strandarrow_forwardWhich of the following enzymes is responsible for "exposing" or "unwinding" the DNA template (taking it out of its double helix) for DNA Replication? a. Topoisomerase b. Telomerase c. DNA Ligase d. Primase e. Helicasearrow_forwardDNA replication involves a series of steps, including initiation, making primers, extension, and connecting DNA fragments. The cell uses different enzymes in a particular order to accomplish these steps. Which of the following represents the correct general order of enzyme use? A. DNA polymerases, helicase, primase, ligase B. Helicase, ligase, primase, DNA polymerases C. Helicase, primase, DNA polymerases, ligase D. Primase, helicase, DNA polymerases, ligasearrow_forward
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