Biol 128: Biological Sci (Looseleaf) (Custom Package)
15th Edition
ISBN: 9781269761383
Author: LANSING CC
Publisher: PEARSON
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Chapter 16, Problem 8TYU
The spontaneous loss of amino groups from adenine in DNA results in hypoxanthine, an uncommon base, opposite thymine. What combination of proteins could repair such damage?
(A) nuclease, DNA Polymerase, DNA ligase
(B) telomerase, primase, DNA Polymerase
(C) telomerase, helicase, single-strand binding protein
(D)
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When DNA replication was investigated by using heavy, N15 DNA to mark the original molecules, and light, N14 DNA to mark the newly synthesized molecules, one band was found in the middle of the centrifuge column after one round of replication, and two bands were found (middle and top of column) after 2 rounds of replication. Imagine that after 1 round of replication 2 bands were found, one at the bottom and one at the top of the centrifuge column. In that case, what model of DNA replication would have been supported?
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The spontaneous loss of amino groups from adenine inDNA results in hypoxanthine, an uncommon base, oppositethymine. What combination of proteins could repair suchdamage?(A) nuclease, DNA polymerase, DNA ligase(B) telomerase, primase, DNA polymerase(C) telomerase, helicase, single-strand bindingprotein(D) DNA ligase, replication fork proteins, adenylylcyclase
a) If you isolated DNA from the ear and the tail of the same mouse, would you expect the DNA, isolated from the two tissue types, to be the same? Why?
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Chapter 16 Solutions
Biol 128: Biological Sci (Looseleaf) (Custom Package)
Ch. 16.1 - Given a polynucleotide sequence such as GAATTC,...Ch. 16.1 - VISUAL SKILLS Griffith was trying to develop a...Ch. 16.2 - What role does complementary base pairing play in...Ch. 16.2 - Identify two major functions of DNA pol III in DNA...Ch. 16.2 - Prob. 3CCCh. 16.2 - Prob. 4CCCh. 16.3 - Describe the structure of a nucleosome, the basic...Ch. 16.3 - What two properties, one structural and one...Ch. 16.3 - MAKE CONNECTIONS Interphase chromosomes appear to...Ch. 16 - What does it mean wheti we say that the two DNA...
Ch. 16 - DRAW IT Redraw the Punnett Square on The right...Ch. 16 - Describe the levels of chromatin packing you'd...Ch. 16 - In his work with pneumonia-causing bacteria and...Ch. 16 - What is the basis for tlie difference in how the...Ch. 16 - In analyzing the number of different bases in a...Ch. 16 - Prob. 4TYUCh. 16 - In a nucleosome, the DNA is wrapped around (A)...Ch. 16 - E. coli cells grown on, 15N medium are transferred...Ch. 16 - A biochemist isolates, purifies, and combines in a...Ch. 16 - The spontaneous loss of amino groups from adenine...Ch. 16 - MAKE CONNECTIONS Although the proteins that cause...Ch. 16 - EVOLUTION CONNECTION Some bacteria may be able to...Ch. 16 - Prob. 11TYUCh. 16 - Prob. 12TYUCh. 16 - Prob. 13TYU
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- In terms of the new DNA strands that are generated, what are the differences between replication and conventional polymerase chain reaction?arrow_forwardWhy is the replication of DNA referred to as a semiconservative process? What is the experimental evidence for the semiconservative nature of the process? What experimental results would you expect if replication of DNA were a conservative process?arrow_forwardDescribe the early models of DNA replication that were investigated and explain how research by Meselson and Stahl supported the current model . Explain the role of each of the following in DNA replication. - helicase - Gyrase - RNA primer - DNA polymerase - Okazaki fragments - DNA ligasearrow_forward
- 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_forwardHow is DNA synthesis in the Polymerase Chain reaction similar to, or different from, DNA synthesis during genome replication in cells?arrow_forwardIs the semiconservative replication of DNA perfect?arrow_forward
- Why is DNA replication considered semiconservative? A. Both strands of each replicating DNA molecules are conserved. B. One molecule consists of the old strands and the other DNA molecule is entirely new. C. One strand of each replicating DNA molecule is conserved and the other strand is newly synthesized. D. Both strands of each replicating DNA molecule are new.arrow_forwardRegarding the process of DNA replication, it is correct to state that: a) Nucleosomes are maintained during the DNA polymerase-mediated replication process b) The phosphodiester bonds that join the nitrogenous bases maintain the integrity of the DNA strands c) DNA polymerase requires a previously annealed deoxynucleotide to add the next monomer being synthesized. d) The action of the helicase decreases the twist caused by the movement of the replication complex along the stretch of DNA e)arrow_forwardExplain briefly how the double-helical structure of DNA suggests a mechanism for DNA replication?arrow_forward
- What would happen if, in the course of replication, the topoisomerases were unable to reattach the DNA fragments of each strand after unwinding (relaxing) the DNA molecule?arrow_forwardWhat enzymatic features of DNA polymerase prevent it from replicating one of the DNA strands at the ends of linear chromosomes? Compared with DNA polymerase, how is telomerase different in its ability to synthesize a DNA strand? What does telomerase use as its template for the synthesis of a DNA strand? How does the use of this template result in a telomere sequence that is tandemly repetitive?arrow_forwardA circular molecule of DNA contains 1 million base pairs. If the rate of DNA synthesis at a replication fork is 100,000 nucleotides per minute, how much time will theta replication require to completely replicate the molecule, assuming that theta replication is bidirectional? How long will replication of this circular chromosome by rolling-circle replication take? Ignore replication of the displaced strand in rolling-circle replication.arrow_forward
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