Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Chapter 4.4, Problem 1CR
Summary Introduction
DNA is a genetic material in both prokaryotes and eukaryotes. Generally, DNA is found in the double helical structure in the genome. Synthesis of DNA is known as replication and it is an important phenomenon in the central dogma of biology. In replication, two identical copies of DNA molecules are produced from the single DNA molecule.
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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?
What 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?
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Chapter 4 Solutions
Brock Biology of Microorganisms (15th Edition)
Ch. 4.1 - What is a genome and what is it composed of? What...Ch. 4.1 - Define the terms complementary and antiparallel as...Ch. 4.1 - Why is supercoiling essential to a bacterial cell?...Ch. 4.1 - Describe the central dogma of molecular biology....Ch. 4.2 - Approximately how large is the Escherichia coli...Ch. 4.2 - Prob. 2MQCh. 4.2 - Prob. 3MQCh. 4.2 - Prob. 1CRCh. 4.3 - Prob. 1MQCh. 4.3 - To which end (5 or 3) of a newly synthesized...
Ch. 4.3 - Prob. 3MQCh. 4.3 - What are the functions of DNA Pol I and III and...Ch. 4.3 - What is meant by the term semiconservative...Ch. 4.4 - Prob. 1MQCh. 4.4 - Prob. 2MQCh. 4.4 - Prob. 3MQCh. 4.4 - Prob. 1CRCh. 4.5 - What enzyme catalyzes transcription? What is a...Ch. 4.5 - Prob. 2MQCh. 4.5 - Prob. 3MQCh. 4.5 - Prob. 4MQCh. 4.5 - Prob. 1CRCh. 4.6 - What three major components make up an archaeal...Ch. 4.6 - Prob. 2MQCh. 4.6 - Prob. 3MQCh. 4.6 - How does the archaeal RNA polymerase differ from...Ch. 4.7 - Prob. 1MQCh. 4.7 - Differentiate between the different classes of...Ch. 4.7 - Prob. 3MQCh. 4.7 - Describe the two types of secondary structure a...Ch. 4.8 - Prob. 1MQCh. 4.8 - What is the function of the acceptor stem of a...Ch. 4.8 - Prob. 3MQCh. 4.8 - Prob. 1CRCh. 4.9 - Prob. 1MQCh. 4.9 - Prob. 2MQCh. 4.9 - Prob. 3MQCh. 4.9 - Why is the genetic code a degenerate code? What is...Ch. 4.10 - What are the components of a ribosome? What...Ch. 4.10 - How is a completed polypeptide chain released from...Ch. 4.10 - How does tmRNA free stalled ribosomes?Ch. 4.10 - Where on the ribosome do tRNAs bind, and what is...Ch. 4.11 - What are molecular chaperones and why are they...Ch. 4.11 - What macromolecules are protected by heat shock...Ch. 4.11 - How do chaperones assist the Escherichia coli cell...Ch. 4.11 - What proteins are involved in refolding misfolded...Ch. 4.12 - Prob. 1MQCh. 4.12 - Prob. 2MQCh. 4.12 - Prob. 3MQCh. 4.12 - Prob. 1CRCh. 4.13 - Prob. 1MQCh. 4.13 - Prob. 2MQCh. 4.13 - Prob. 3MQCh. 4.13 - Prob. 1CRCh. 4 - The genome of the bacterium Neisseria gonorrhoeae...Ch. 4 - Compare and contrast the activity of DNA and RNA...Ch. 4 - What would be the result (in terms of protein...
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- What is generated from the replication of DNA ? what method is used ? Describe the process. What are Okazaki fragments? What enzymes are used ?arrow_forwardIn what ways are DNA polymerase and RNA polymerase similar? How do they differ?arrow_forwardWhat is meant by semi conservative replication? How did Meselson and Stahl prove it experimentally?arrow_forward
- How many times would telomerase have to bind to a different site in the telomere to make a segment of DNA that is 36 nucleotides in length?arrow_forwardWhat are genomic DNA libraries ?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 piecearrow_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 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_forwardWhy do longer DNA molecules move more slowlythan shorter ones during electrophoresis?arrow_forwardHow and why does DNA replication occur differently on the leading and lagging strands?arrow_forward
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