Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 7, Problem 9RQ
Summary Introduction
To review:
The following:
1. A clamp loader,
2. Primase,
3. DNA helicase,
4. Helicase loader,
5. DNA proofreading.
Introduction:
DNA (deoxyribonucleic acid) replication is completed in three stages, initiation, elongation, and termination. DNA methylation and binding of precise initiator protein to the origin sequence controls the initiation of replication. The binding of initiator proteins to the replication origin is responsible for triggering the events that unwind the double helix of DNA into two single strands. There are several groups of protein involved in the unwinding of DNA double helix.
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Chapter 7 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 7.2 - Prob. 1TQCh. 7.2 - Prob. 2TQCh. 7.2 - Prob. 3TQCh. 7.2 - Prob. 4TQCh. 7.3 - Prob. 1TQCh. 7.3 - Prob. 2TQCh. 7.3 - Prob. 3TQCh. 7.3 - Prob. 4TQCh. 7.3 - Prob. 5TQCh. 7.6 - Prob. 1TQ
Ch. 7.6 - Prob. 2TQCh. 7.6 - Prob. 3TQCh. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - Prob. 3RQCh. 7 - Prob. 4RQCh. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Prob. 10RQCh. 7 - Prob. 11RQCh. 7 - Prob. 12RQCh. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - Prob. 1TQCh. 7 - Prob. 2TQCh. 7 - Prob. 3TQ
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- What is an Okazaki fragment? In which strand of replicating DNA are Okazaki fragments found? Based on the properties of DNA polymerase, why is it necessary to make these fragments?arrow_forwardWhat are cis acting DNA sequences? List themarrow_forwardWhich Strict Operating Requirements DNA Polymerase Has?arrow_forward
- What is generated from the replication of DNA ? what method is used ? Describe the process. What are Okazaki fragments? What enzymes are used ?arrow_forwardA DNA fragment with 450 bp will be closer to the top (negative pole) of an electrophoresis gel than one with 2,500 bp.True or false?arrow_forwardUsing the figure below, what is molecule "A" (type a 1, 2 or 3 in the blank) nuclease ligase DNA polymerase What is the function of molecule "A"? to separate the double helix into two to piece together the Okazaki segments to copy the new DNA strand to the old strand by complementary base pairing Using the figure below, what is molecule "G" (type a 1, 2 or 3 in the blank) nuclease ligase DNA polymerase What is the function of molecule "G"? to separate the double helix into two to piece together the Okazaki segments to copy the new DNA strand to the old strand by complementary base pairing Which of the following statements best describes why one of the daughter strands is synthesized in pieces? the enzymes that synthesize DNA are slower that the enzymes that unwind the double helix and this produces 'lagging time' the enzymes that synthesize DNA can only do so in a 5' --->3' direction this figure illustrates a eukaryotic cell since prokaryotic cells do not synthesize DNA…arrow_forward
- Using the figure below, what is molecule "A" (type a 1, 2 or 3 in the blank) nuclease ligase DNA polymerase What is the function of molecule "A"? to separate the double helix into two to piece together the Okazaki segments to copy the new DNA strand to the old strand by complementary base pairing Using the figure below, what is molecule "G" (type a 1, 2 or 3 in the blank) nuclease ligase DNA polymerase What is the function of molecule "G"? to separate the double helix into two to piecearrow_forwardWhat do you mean by amphoteric substance? Give examples of substance that is/are amphoteric. What is the purpose of the power supply in gel electrophoresis? Among the short and long strand of DNA, which moves the farthest in the gel and why? What is the purpose of buffer in agarose gel electrophoresis?arrow_forwardWhat is the base sequence, specified in the 5′-to-3′ direction, for a segment of newly formed DNA if it was formed using the following template DNA segments? 3′ AATGC 5′ 5′ AATGC 3′ 3′ GCAGC 5′ 5′ GCAGC 3′arrow_forward
- What is the role of alcohol in extracting DNA? DNA is a polar molecule with an overall negative charge, and as such is not soluble in alcohol, and therefore precipitates. DNA is a polar molecule with an overall positive charge, and as such is not soluble in alcohol, and therefore precipitates. DNA is a non polar molecule with an overall negative change, and as such is soluble in alcohol, and therefore precipitates. DNA is a polar molecule with an overall positive change, and as such is soluble in alcohol, and therefore precipitates.arrow_forwardA DNA strand was sequenced using the Sanger method (https://www.youtube.com/watch?v=KTstRrDTmWI). The reaction tube contained the DNA strand, fluorescently labelled dideoxynucleotide triphosphates (ddATP – yellow, ddGTP – green, ddCTP – blue, ddTTP - red), deoxynucleotide triphosphates, DNA polymerase, or its Klenow fragment. Synthesis of DNA is allowed to proceed, and the results are shown on the right: 15 14 13 12 11 10 (a) What is the sequence of the copy and the template strands? (b) If the template strand were in the 5'-3' direction, what will be the sequence of the DNA copy? Nucleotide Lengtharrow_forwardA Sanger product of the sequencing of a template DNA is presented +ddTTP +ddATP +ddCTP +ddGTP Mononucleotide Pentanucleotide Trinucleotide Dinucleotide 11-nucleotide Hexanucleotide Octanucleotide Tetranucleotide 16-nucleotide Decanucleotide Nonanucleotide Heptanucleotide 17-nucleotide 15-nucleotide 13-nucleotide 12-nucleotide 18-nucleotide 20-nucleotide 14-nucleotide 19-nucleotide 21-nucleotide 1. Determine the sequence of template DNA 2. Determine the mRNA sequence from this template DNA 3. Determine the the sequence of protein product derived from that DNAarrow_forward
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