Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780133910605
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 12, Problem 2MC
Summary Introduction
Introduction:
DNA is “Deoxyribonucleic acid” as it serves as the genetic material for all eukaryotic and prokaryotic cell. It has a thread-like double helical structure in which two strands are complementary to each other. It carries all the information which is required for proper growth, development, and reproduction of an organism.
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Why is DNA replication called semiconservative?
A. Both daughter strands are entirely new
B. Each daughter duplex contains one strand from the parent structure and one new strand
C. Each daughter duplex will contain parts of the parental strand in each strand.
D. None of these is the correct answer.
What is the major role of DNA polymerase in the DNA replication?
a. Attached RNA primers to initiate the addition of complementary nucleotide sequence at the 5’ to 3’direction
b. Adds up new complementary nucleotide sequence at the 3’ to 5’ direction of the DNA template.
c. Unwinds the double helix by breaking the bonds at the 3’ to 5’ polymerization activity.
d.It transiently cuts each strand to prevent supercoil at the 5’ to 3’ polymerization activity complementary to the RNA strand
Why is DNA replication considered semiconservative?
a. One molecule consists of the old strands and the other DNA molecule is entirely new.
b.Both strands of each replicating DNA molecule are 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 molecules are conserved.
Chapter 12 Solutions
Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 12.1 - describe the experiments of Griffith; Avery,...Ch. 12.1 - explain why these experiments showed that DNA is...Ch. 12.2 - Some viruses, such as the tobacco mosaic virus...Ch. 12.2 - Which do you think would be more difficult to...Ch. 12.2 - Prob. 1CYLCh. 12.3 - Prob. 1CYLCh. 12.3 - Muscles, Mutations, and Myostatin The sequence of...Ch. 12.3 - How Much Genes Influence Athletic Prowess?Ch. 12.4 - describe the process of DNA replication, including...Ch. 12.4 - explain why DNA replication is called...
Ch. 12.4 - Muscles, Mutations, and Myostatin "Double-muscled"...Ch. 12.5 - Prob. 1TCCh. 12.5 - explain what mutations are and how they occur?Ch. 12.5 - explain why mutations are rare?Ch. 12.5 - describe the different types of mutations?Ch. 12.5 - Prob. 1CSRCh. 12 - If a parental DNA strand has the base sequence...Ch. 12 - Prob. 2MCCh. 12 - Prob. 3MCCh. 12 - The rungs of the DNA double helix consist of a....Ch. 12 - Prob. 5MCCh. 12 - Prob. 1FIBCh. 12 - Prob. 2FIBCh. 12 - Prob. 3FIBCh. 12 - Prob. 4FIBCh. 12 - Prob. 5FIBCh. 12 - Prob. 6FIBCh. 12 - Prob. 1RQCh. 12 - Prob. 2RQCh. 12 - Describe the structure of DNA. Where are the...Ch. 12 - Prob. 4RQCh. 12 - Describe the process of DNA replication.Ch. 12 - How do mutations occur? Describe the principal...Ch. 12 - In an alternate universe, although proteins are...Ch. 12 - Genetic information is encoded in the sequence of...
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- What is the basis for the difference in how the leading and lagging strands of DNA molecules are synthesized? a. The origins of replication occur only at 5'end b. Helicases and single-strand binding proteins work at the 5'end c. DNA polymerase can join new nucleotides only to the 3' end of a pre-existing strand d. DNA ligase works only in the 3'-5' directionarrow_forwardWhy 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_forwardWhat 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 DNAarrow_forward
- Which dna strand will be synthesized continuously during dna replication? a.The strand that is synthesized as Okazki Fragments b.the strand which is synthesized in the opposite direction compared to the direction of DNA unwinding? c.the strand which is sythesized in the same direction as the same direction of DNA unwinding? d.The m-RNA like strand e. The non-template strandarrow_forwardWhat is the correct chronological order of the initiation of DNA replication? A. Hydrogen bonds between complementary base pairs are broken at origin of replication B. Primase binds to the site of origin. C. DNA polymerase binds to the template strand. D. An RNA primer is synthesized. E. Incoming deoxynucleoside triphosphates are added to the growing strand.arrow_forwardDuring DNA replication, what is the very first process to occur? a. synthesis of the lagging strand b. sealing of the nicks between short DNA sections c. synthesis of the leading strand d. identifying where to start or "initiate" replication e. unwinding of the parent DNAarrow_forward
- Why are mutations more likely to occur in repeated DNA sequences? a. These bases are unstable b. bases in the strand can form base pairs, generating loops that interfere with replication and repair enzymes. c. The repeats hold onto the replication enzymes, causing base mismatches d. the repeats attract and bind to mutagens, increasing the mutation ratearrow_forwardWhat is the role of DNA polymerase in DNA replication? O A. DNA polymerase replicates tRNA, mRNA and rRNA B. DNA polymerase adds A-U-G-C as compliments to the original DNA strand to make an identical copy. O C. DNA polymerase "unzips" the DNA D. DNA polymerase adds complimentary free nucleotides to the original strand to make and identical copy. Submit Clear form Never submit passwords through Google Forms. This form was created inside of East Baton Rouge Parish Schools. Report Abuse Google Formsarrow_forwardWhat is the correct sequence action of proteins during the process of DNA replication? A. DNA polymerase, helicase, primase, ligase, SSB B. helicase, SSB, primase, ligase, DNA polymerase C. ligase, helicase, SSB, primase, DNA polymerase D. helicase, SSB, primase, DNA polymerase, ligasearrow_forward
- Which enzyme adds RNA nucleotides to mark the starting point for the synthesis of a new DNA strand? A. DNA polymerase I B. DNA polymerase III C. primase D. helicase 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. telomerase, primase, DNA polymerase B. nuclease, DNA polymerase, DNA ligase C. telomerase, helicase, single-strand binding protein D. DNA ligase, replication fork proteins, adenylyl cyclase A section of DNA has the following sequence of nitrogenous bases: CGATTACAG. Which of the following sequence would be produced as a result of transcription? A. CGTUUTCTG B. GCTAATGTC C. CGAUUACAG D. GUAAUGUCarrow_forwardWhat is the difference between the leading strand and the lagging strand in DNA replication? a There are different DNA polymerases involved in elongation of the leading strand and the lagging strand. b The leading strand is synthesized continuously in the 5' → 3' direction, while the lagging strand is synthesized discontinuously in the 5' → 3' direction. c The leading strand requires an RNA primer, whereas the lagging strand does not. d The leading strand is synthesized in the 3' → 5' direction in a discontinuous fashion, while the lagging strand is synthesized in the 5' → 3' direction in a continuous fashion.arrow_forwardWhat is the function of resolvase in recombination? a. It unwinds double-stranded DNA. b. It allows a single DNA strand to invade a DNA helix. c. It displaces one of the original DNA strands during branch migration. d. It cleaves the Holliday structure.arrow_forward
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