Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 11.4, Problem 1COMQ
DNA polymerase III is a processive enzyme, which means that
a. it does not dissociate from the growing strand after it has attached a
b. it makes a new strand very quickly.
c. it proceeds toward the opening of the replication fork.
d. it copies DNA with relatively few errors.
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Students have asked these similar questions
DNA replication is said to be semiconservative because
a. one of the new molecules conserves both of the original DNA strands.
b. the new DNA molecule contains two new DNA strands.
c. both of the new molecules contain one new strand and one old strand.
d. DNA polymerase conserves both of the old strands.
a. unwinds the DNA helix
b. stabilizes and stops the two strands from annealing (rebinding with
each other)
c. recoils the DNA
d. cleaves both strands of DNA to relieve tension at supercoils
e. places RNA primers at their proper location on the template strands
f. acts as starting points for DNA polymerase
g. adds DNA nucleotides to form new DNA strands
h. forms phosphodiester bonds to join Okazaki fragments
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1. single-strand binding protein
2. helicase
3. DNA ligase
4. RNA primer
5. gyrase
6. DNA polymerase
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The function of DNA ligase is to:
a. Catalyze formation of phosphodiester bonds between adjacent nucleotides
b. Catalyze formation of hydrogen bonds between adjacent nucleotides
c. Keep single strands of DNA apart during replication
d. Facilitate base pairing between single stranded molecules in DNA
e. Both a. and d. are correct
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 - 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 - Prob. 25CONQCh. 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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which statement about Okazaki fragments is true? Select one: a. DNA polymerase doesn’t need a primer to build these fragments b. They act as a primer that initiates DNA replication. c. They correct errors made during earlier phases of DNA replication. d. They are necessary because DNA polymerase can only build DNA in the 5’ to 3’ direction, so for one of the strands at each fork, the DNA polymerase can only buildaway from the fork. e. They prevent the ends of chromosomes from shortening with every replication.arrow_forwardFor the statements below, indicate whether the statement applies to the leading strand, or to the lagging strand, or to both. a. synthesized in the 5'→3' direction b. synthesized continuously c. require(s) DNA ligase to join fragments d. described as a daughter strand e. synthesized in the same direction as the movement of the replication fork f. DNA polymerase is the enzyme involved in forming this polynucleotide.arrow_forwardThe enzyme responsible for adding new nucleotides to a growing DNA chain during DNA replication is a. helicase. b. RNA polymerase. c. DNA polymerase. d. DNA ligase.arrow_forward
- The elongation of leading strand during DNA synthesis a. progresses away from the replication fork. b. occurs in the 3'-5' direction c. does not require a template strand d. depends on the action of DNA polymerasearrow_forwardWhich of the following enzymes is responsible for ensuring that genetic material at the end of the chromosome is not lost during DNA replication? a. Helicase b. DNA Polymerase c. Telomerase d. DNA Ligase e. Primasearrow_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_forward
- Topoisomerases are enzymes that can: a. join two DNA fragments to become one. b. catalyze conformational change of a protein. c. cut DNA at specific site. d. catalyze the breaking and rejoining of DNA strands which produces DNA that is either more or less superhelical than the original.arrow_forwardWhat is the difference between the leading strand and the lagging strand in DNA replication? a There are different DNA polymerases involved in elongation of the leading strand and the lagging strand. b The leading strand is synthesized continuously in the 5' → 3' direction, while the lagging strand is synthesized discontinuously in the 5' → 3' direction. c The leading strand requires an RNA primer, whereas the lagging strand does not. d The leading strand is synthesized in the 3' → 5' direction in a discontinuous fashion, while the lagging strand is synthesized in the 5' → 3' direction in a continuous fashion.arrow_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
- Place the following steps of DNA replication and repair in the correct order by numbering them from 1 to 5. a. A template strand begins to be replicated. b. If the incorrect base is not identified and replaced, it remains as a point mutation in the DNA. c. DNA polymerase identifies and replaces most incorrect bases with the correct base, complementary to the base on the template strand. d. An incorrect base is added to the growing strand of DNA. e. Proteins identify and replace any incorrect bases missed by DNA polymerase.arrow_forwardDuring DNA replication, the leading strand is synthesized continuously, while the lagging strand is synthesized as Okazaki fragments. This is because: O A. DNA polymerases can bind to only one strand at a time. O B. Two different DNA polymerases are involved in replication (DNA polymerase I and II). O C. DNA synthesis can take place only in the 5 -> 3 direction. D. The primers are made of RNA. Reset Selection Previous NEXT Save Exit MacBook Pro Q Search or enter website name & %24 %23 4 3 00 < COarrow_forwardDNA strands are anti-parallel and DNA polymerase can only synthesize DNA in a 5' to 3' direction. How does the enzyme synthesize both strands at the same time? A. The leading strand is sythesised in Okazaki fragments B. The lagging strand is synthesised in short Okazaki fragments. C. Only one strand is replicated. D. There are more than one DNA polymerase involved.arrow_forward
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