Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 16, Problem 4TYU
The elongation of the leading Strand during DNA synthesis
(A) progresses away from the replication fork.
(B) occurs in the 3' → 5' direction.
(C) produces Okazaki fragments.
(D) depends on the action of DNA polymerase.
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Without the action of DNA ligase, cells would not be ableto complete their replication. What is the function of DNAligase?(a) Unzips the DNA double helix(b) Stabilizes single-stranded DNA(c) Binds DNA sequences together to generate acontinuous strand(d) Proofreads the replication process(e) Creates an RNA copy of the DNA
(a) Eukaryotic DNA replication is more complex than prokaryotic replication. Give one reason why this should be so.
(b) Why might eukaryotic cells need more kinds of DNA polymerases than bacteria?
(a) What is the function of helicase in DNA replication?(b) What is the function of DNA polymerase?(c) What are replication forks? Compare and contrast leading and lagging strands.
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Chapter 16 Solutions
Campbell Biology: Custom Edition
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 - The elongation of the leading Strand during DNA...Ch. 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 - SCIENTIFIC INQUIRY DRAW IT Model building can be...Ch. 16 - Prob. 12TYUCh. 16 - Prob. 13TYU
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- The following statements are correct EXCEPT: A) Information in the DNA is transcribed int mRNA and translated into proteins B) Information in the DNA is translated int mRNA and transcribed into proteins C) Information in the DNA is copied by DNA polymerase D) The lagging strand during DNA replication is synthesized continuously to form the okazaki fragments E) B and Darrow_forwardDuring DNA replication, the proteins that ensure denatured templates are not re- natured are called .......... ........and the protein that connects the fragmented pieces of DNA in the lagging (discontinuous) strand is called............ I Aarrow_forward(a) What will be the problem during DNA replication if the enzyme primase becomes non-functional? (b) In which step of the central dogma is the genetic information of DNA copied into new DNA strands? (c) Which of the following codons is a start codon: GCU, AUG or UGA?arrow_forward
- DNA replication always proceeds in only one direction because the ________ of the incoming nucleotide is attached to the free ________ of the growing DNA strand. A) 5'-phosphate / 3'-hydroxyl B) 3'-phosphate / 5'-hydroxyl C) 5'-deoxyribose / 3'-base D) 3'-base / 5'-deoxyribosearrow_forwardThe process of DNA replication is affected by an enzyme known as: (a) Mutase (b) Ligase (c) Polymerase I (d) Ribonucleasearrow_forwardDNA replication results in (a) two DNA molecules—one with two old strands, and one with two new strands. (b) two DNA molecules, each of which has two new strands. (c) two DNA molecules, each of which has one old strand and one new strand. (d) none of the abovearrow_forward
- The statement “DNA replicates by a semiconservative mechanism” means that (a) only one DNA strand is copied (b) first one DNA strand is copied and then the other strand is copied (c) the two strands of a double helix have identical base sequences (d) some portions of a single DNA strand are old and other portions are newly synthesized (e) each double helix consists of one old and one newly synthesized strandarrow_forward(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? (4) Which nucleic acid is probably depicted here? (5) What are these short DNA fragments usually called? (6) Which enzyme probably functions here to couple these two newly synthesized fragments of DNA? (7) Is this strand the leading or lagging strand? (8) Which end (5' or 3') of the molecule is here?arrow_forward10) Which of the following statements is false? A) Single stranded binding proteins help nucleotide bases pair during DNA replication. B) Topoisomerase prevents DNA from getting overwound during replication. C) DNA ligase connects Okazaki fragments during DNA replication. D) DNA helicase separates complementary strands of DNA during replication.arrow_forward
- (5) What are these short DNA fragments usually called? (6) Which enzyme probably functions here to couple these two newly synthesized fragments of DNA? (7) Is this strand the leading or lagging strand?arrow_forwardThe DNA double helix is stabilized by ... a) H-bonds between the sugar-phosphate backbones. b) ionic interactions between the sugar-phosphate backbones. c) H-bonds between complementary bases. d) a and c e) a, b and carrow_forwardWhich of the following items do not affect the melting temperature of DNA? A) length of the DNA the type of polymerase used to amplify the DNA (C) salt content surrounding the DNA D) nucleotide composition of the DNA E) the type of DNA (genomic versus CDNA)arrow_forward
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