BIOLOGY
4th Edition
ISBN: 9781266739606
Author: Hoefnagels
Publisher: MCG
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Chapter 8.2, Problem 4MC
Summary Introduction
To determine:
Weather replication will take place if primase are not present in a cell.
Concept introduction:
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Could DNA replication occur if primase were not present in a cell? Explain your answer.
Below is a diagram of DNA replication as currently believed to occur in E. coli. Arrows start from numbers and end at specific points. Answer the questions relating to the locations specified by the numbers
(1) Which end (5' or 3') of the molecule is here?
(2) Which enzyme is probably functioning here to deal with supercoils in the DNA?
(3) Which enzyme is probably functioning here to unwind the DNA?
describe two roles that enzymes play in DNA replication
Chapter 8 Solutions
BIOLOGY
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. 8.2 - Prob. 5MCCh. 8.3 - Which cell types divide by binary fission?Ch. 8.3 - Prob. 2MCCh. 8.4 - Prob. 1MC
Ch. 8.4 - Sketch and label the main parts of a duplicated...Ch. 8.5 - Prob. 1MCCh. 8.5 - Prob. 2MCCh. 8.5 - Prob. 3MCCh. 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 - List and describe the three most common cancer...Ch. 8.6 - Prob. 6MCCh. 8.6 - Prob. 7MCCh. 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 - Prob. 3WIOCh. 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. 6WIOCh. 8 - Prob. 7WIOCh. 8 - Describe what will happen to a cell if interphase...Ch. 8 - List the ways that binary fission is similar to...Ch. 8 - Prob. 10WIOCh. 8 - Prob. 11WIOCh. 8 - Why do chemotherapy and radiation sometimes kill...Ch. 8 - Prob. 13WIOCh. 8 - Prob. 1PITCh. 8 - Prob. 2PITCh. 8 - Prob. 3PIT
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- Determine whether the following statement regarding eukaryotic DNA replication is true or false: DNA is linear?arrow_forwardWhich enzyme is missing in a cell where replication bubbles form and RNA primers are present but no DNA replication takes place?arrow_forwardDNA replication is vital for successful cell division. Explain the process of DNA replication. Make sure to use the following terms: helicase, S-phase, DNA polymerase and DNA ligase, template, free nucleotides. Use the diagram if it helps you illustrate your points.arrow_forward
- Why is DNA replication described as “semiconservative?”arrow_forwardIllustrate some steps involved in DNA replication :Suppose the following base sequence was found in a segment of one strand of a DNA molecule: 3’ A-A-T-A-C-C-T-C-C-T-A-A-C-T 5’ What would be the bases in the complementary strand? Label the 3’ and the 5’ ends. Illustrate the DNA molecule below. Label the 3’ and the 5’ ends of both strands. Separate the above DNA molecule up to the seventh base. Add one primer for the leading strand complementary to the first base Adenine of the template strand. Add one primer for the lagging strand complementary to the seventh base Adenine of the template strand. Illustrate the DNA molecule. Label the 3’ and 5’ ends. Elongate the new strands up the seventh base by adding DNA bases complementary to the template strand. Illustrate the resulting DNA molecule. Label the 3’ and the 5’ ends of the template strands and the complementary strands. Elongate the new strands up the seventh base by adding DNA bases complementary to the template strand. Illustrate…arrow_forwardExplain why DNA replication proceeds only in the 5′ to 3′direction.arrow_forward
- If ligase was defective in a cell, which strand of DNA Replication do you think would be most affected, the leading or lagging strand? Fully explain why you think that by describing the enzyme function and the differences in replication in the leading and lagging strands.arrow_forwardList and describe the steps in prokaryotic DNA replication. How does this process appear to differ from eukaryotic DNA replication?arrow_forwardBriefly explain why DNA replication is an exergonic processarrow_forward
- In a single strand of DNA, is it ever possible for the number of adenines to be greater than the number of thymines? Describearrow_forwardYou have a drug that blocks the activity of Primase during DNA replication. What are the steps in DNA replication would be affected by this drug and why? Explain your answer.arrow_forwardCompare and contrast the activity of a topoisomerase and a helicase in the context of DNA replication. Answer in 2-3 sentences.arrow_forward
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