Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 8, Problem 1MCQ
A DNA molecule is placed in a test tube containing fluorescently tagged
a. only one DNA molecule would have two fluorescent strands.
b. both strands of each DNA molecule would be half-fluorescent.
c. each DNA molecule would have one fluorescent strand.
cl. both DNA molecules would be completely fluorescent.
Expert Solution & Answer
Summary Introduction
Introduction:
DNA replication is a process of producing two identical copies of DNA from parental DNA. DNA replication is known as semicoservative, because each new copy will have one parental strand.
Answer to Problem 1MCQ
Correct answer:
Each DNA molecule would have one florescent strand. This statement explains correctly that DNA replication is a semi conservative process. Therefore, option c. is correct
Explanation of Solution
Reason for the correct statement:
DNA replication is a semi conservative process in which new replicas of DNA will have one parental strand. So, in this DNA molecule one strand will be normal and other strand will be florescent.
Option c. is given as “each DNA molecule would have one florescent strand”.
As, “DNA replication is a semi conservative process so whenever a new replica is formed it will always have one parental strand, so in this DNA molecule one strand will be normal and other strand will be florescent”, is the right answer.
Hence, option c. is correct.
Reasons for the incorrect statements:
Option a. is given as “only one DNA molecule would have two florescent strands”.
This is never possible in case of replication because if replication occurs then parental strand is shared within the replicas, so both florescent strands cannot stick together. So, it is a wrong answer.
Option b. is given as “both strands of each DNA molecule would be half florescent”.
This is the case of dispersive replication, but in case of DNA it only replicate through semicoservative way. So, it is a wrong answer.
Option d. is given as “both DNA molecules would be completely florescent”
This is the case of conservative replication, but in case of DNA it only replicate through semi-conservative way. So, it is a wrong answer.
Hence, options a., b., and d. are incorrect.
Conclusion
DNA replicates through semi-conservative way in which new replica is formed and that new replica will always have one parental strand.
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Students have asked these similar questions
During DNA replication:
A. The two DNA strands separate, each strand then becomes a template for the assembly of a complementary strand. Each new DNA helix has one old strand with one new strand.
B. The two DNA strands separate, each strand then becomes a template for the assembly of a similar strand. Each new DNA helix has one old strand with one new strand.
C. The two DNA strands separate, each strand then becomes a template for the assembly of a similar strand. Each new DNA helix has two new strands.
D. The two DNA strands separate, each strand then becomes a template for the assembly of an identical strand. Each new DNA helix has one old strand with one new strand.
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.
DNA 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, ligase
Chapter 8 Solutions
Biology: Concepts and Investigations
Ch. 8.1 - Explain the roles of mitotic cell division,...Ch. 8.1 - Prob. 2MCCh. 8.2 - Prob. 1MCCh. 8.2 - Prob. 2MCCh. 8.2 - Prob. 3MCCh. 8.2 - Prob. 4MCCh. 8.3 - Which cell types divide by binary fission?Ch. 8.3 - Prob. 2MCCh. 8.4 - Prob. 1MCCh. 8.4 - Prob. 2MC
Ch. 8.5 - Prob. 1MCCh. 8.5 - Prob. 2MCCh. 8.5 - Prob. 3MCCh. 8.5 - Prob. 4MCCh. 8.5 - Distinguish between mitosis and cytokinesis.Ch. 8.6 - Prob. 1MCCh. 8.6 - Prob. 2MCCh. 8.6 - Prob. 3MCCh. 8.6 - Prob. 4MCCh. 8.6 - Prob. 5MCCh. 8.7 - Prob. 1MCCh. 8.7 - Prob. 2MCCh. 8.8 - Prob. 1MCCh. 8.8 - Prob. 2MCCh. 8 - A DNA molecule is placed in a test tube containing...Ch. 8 - Prob. 2MCQCh. 8 - Prob. 3MCQCh. 8 - Prob. 4MCQCh. 8 - Prob. 5MCQCh. 8 - Prob. 1WIOCh. 8 - Write and explain an analogy for each of these DNA...Ch. 8 - Obtain a rubber band and twist it as m any times...Ch. 8 - Sketch and describe the events that occur when a...Ch. 8 - Prob. 5WIOCh. 8 - List the ways that binary fission is similar to...Ch. 8 - Prob. 7WIOCh. 8 - Prob. 8WIOCh. 8 - Prob. 9WIOCh. 8 - Prob. 1PITCh. 8 - Prob. 2PITCh. 8 - Prob. 3PIT
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