Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 15, Problem 2SQ
Summary Introduction
To explain: The reason that the statement “
Introduction: DNA is the genetic material of most of the organisms including many microbes. RNA too serves as the genetic material in some of the organisms mainly viruses. DNA replication is the process in which the genetic material that is DNA divides and duplicates and forms its copies, which is passed on the new cell and thereby there is the transfer of traits takes place from one generation to the other generation.
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Prior to the action of DNA ligase, how many hydrogen bonds are holding these two DNA fragments together?
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Chapter 15 Solutions
Campbell Essential Biology with Physiology (6th Edition)
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- When RNA polymerase transcribes DNA, only one of the two DNA strands is used as a template. Take a look and explain how RNA polymerase determines which DNA strand is the template strand.arrow_forwardWhich describes the role of primase during replication? It catalyzes the formation of phosphodiester bonds using NTPs as substrates. It coordinates synthesis of the leading strand and the lagging strand. It functions as a holoenzyme that polymerizes in the 3’→ 5’ direction. It uses an exonuclease activity to remove incorrect nucleotides.arrow_forwardDNA polymerases have a shape resembling a right hand with three functional domains. What are the roles of these domains in DNA replication?arrow_forward
- Why is more than one replication fork needed when human DNA is duplicated?arrow_forwardAs a result of DNA replication two DNA molecules come into existence. Why is it not correct to assert that two “new” DNA molecules are created? What is the name given to the process concerning that fact?arrow_forwardIs the semiconservative replication of DNA perfect?arrow_forward
- Explain how the double helical structure of the DNA suggests a mechanism for DNA replicationarrow_forwardIn the process of DNA replication, there are four important enzymes. Construct a table, provide what the four enzymes are, and explain how they function in DNA replication.arrow_forwardA scientist used a radioactive isotope of nitrogen to label the nitrogenous bases of the DNA in a bacterial cell. The labeled cells were then allowed to grow and divide for one generation in a medium of non-radioactive nitrogen. Describe how the distribution of radioactive DNA to the daughter cells provides evidence for semiconservative replication of the DNA molecule.arrow_forward
- What is the first step in the process of DNA replication? Which enzyme is responsible for “unzipping” the DNA double helix? Which enzyme is responsible for facilitating the hydrogen bonding between nucleotides in a new DNA molecule? Which enzyme is responsible for creating the covalent bonds that connect the sugar-phosphate backbone of the new DNA molecules?arrow_forwardWhich helps prevent errors in DNA replication? A) Complementary base pairing reduce errors B) DNA ligase checks the DNA for errors C) DNA is located in the ribosomes D) Any base can pair with any other basearrow_forwardDNA polymerases have a shape resembling a right hand with three domains. Explain how these three domains participate during DNA synthesis.arrow_forward
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