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 11.3, 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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Chose one of the options from A,B,C,D
After replication,_________.
a
one new DNA double helix consists of two old strands and the other new DNA double helix consists of two new strands
b
each new DNA double helix consists of two new strands
c
each new DNA double helix consists of two old strands
d
each new DNA double helix consists of one old strand and one new strand
What is DNA polymerase?
a.An enzyme that carries out DNA replication
b.Short, single strand of DNA that base-pairs with a specific DNA sequence
c.An enzyme that corrects mutations that arise during the replication of DNA
d.An enzyme that seals any gaps that remain between bases of replicating strands of DNA
How is each new nucleotide added to the growing end of a DNA strand?
a.
A dehydration reaction joins the monomer to the new strand
b.
By using DNA polymerase
c.
Both of the above
d.
A hydrolytic reaction joins the monomer to the new strand
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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- 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_forwardWhat are major functions that DNA polymerase performs? A. unzips the DNA strand and makes the new nucleotides B. proof reads the new DNA strands for errors and corrects them C. bonds the nucleotides together forming the new DNA strand D. A, B, and C E. A and B F. B and C G. A and Carrow_forwardWhich model accurately represents the semi-conservative nature of DNA replication? Figure A Figure B Figure C Figure D A A A A A A A A AB AB AA BB AA AA AB ACarrow_forward
- 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 begins... A. At the origin of replication B. At the 5' end of the DNA strand C. At the centromeres where sister chromatids are connected D. At the start codonarrow_forwardWhat is DNA polymerase? A. An enzyme that corrects mutations that arise during the replication of DNA B. An enzyme that seals any gaps that remain between bases of replicating strands of DNA C. Short, single strand of DNA that base-pairs with a specific DNA sequence D. An enzyme that carries out DNA replicationarrow_forward
- Without the action of DNA ligase, cells would not be ableto complete their replication. What is the function of DNAligase?(a) Unzips the DNA double helix(b) Stabilizes single-stranded DNA(c) Binds DNA sequences together to generate acontinuous strand(d) Proofreads the replication process(e) Creates an RNA copy of the DNAarrow_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_forwardWhat happens at the conclusion of DNA replication?a. The daughter double helices each consist of one original DNA strand and one new DNA strand.b. One daughter double helix consists of the two original DNA strands and the other daughter double helix consists of two new DNA strands.c. Each resulting DNA strand consists of part of one of the original DNA strands and part of a new DNA strand.d. The resulting DNA daughter strands contain nucleotide sequences that were not present in the parental DNA strands.arrow_forward
- In DNA replication, a primer is _____. a. what the original DNA strands are called b. a molecule that provides the energy for nucleotide attachments c. a regulatory protein that turns on the gene that starts DNA replication d. an enzyme that breaks the hydrogen bonds between base pairs e. a short piece of nucleic acid that serves as an attachment point for DNA polymerasearrow_forwardIn DNA replication, the role of topoisomerase is to Question 11 options: a) "unzip" the double stranded DNA in front of DNA polymerase. b) maintain the single stranded DNA. c) supercoil the DNA after the replication fork has passed. d) relieve supercoil tension in the DNA in front of the replication fork.arrow_forwardWhat is meant by the term DNA replication? a. synthesis of nucleotides b. cell division c. interpretation of the genetic code d. the exact copying of the DNA code into two new moleculesarrow_forward
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