PRESCOTT'S MICROBIO W/PROCTORIO
11th Edition
ISBN: 9781264731060
Author: WILLEY
Publisher: MCG
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Chapter 16.3, Problem 4CC
Explain how the following DNA alterations and replication errors would be corrected (there may be more than one way): base addition errors by DNA polymerase III during replication, thymine dimers, AP sites, methylated guanines, and gaps produced during replication.
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Explain in not more than 5 sentences.
If deoxyribonucleotides that lack the 3’-OH groups are added during the replication process, what do you expect will occur?
Identify the various types of DNA repair mechanisms known to counteract the effects of UV radiation.
Drag the terms on the left to the appropriate blanks on the right to complete the sentences.
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SoS repair
is dependent on a photon-activated enzyme that cleaves thymine dimers.
excision repair
is the process by which an endonuclease clips out UV-induced dimers, DNA
photoreactivation repair
polymerase III fills in the gap, and DNA ligase rejoins the phosphodiester backbone.
recombinational repair
uses the corresponding region on the umdamaged parental strand of the same
polarity.
is a process in E. coli that induces error-prone DNA replication in an effort to fill
gaps by inserting random nucleotides.
The proteins and enzymes listed below are all required for DNA replication in E. coli, but they are listed in a random order. Determine the correct order in which they function in replication, by selecting the correct number from the drop-down menu in each case, with 1 being first and 6 being last.
Chapter 16 Solutions
PRESCOTT'S MICROBIO W/PROCTORIO
Ch. 16.1 - Retrieve, Infer, Apply List three ways in which...Ch. 16.1 - Compare and contrast the means by which the...Ch. 16.1 - Give examples of intragenic and extragenic...Ch. 16.1 - Retrieve, Infer, Apply Sometimes a point mutation...Ch. 16.1 - Retrieve, Infer, Apply Why might a missense...Ch. 16.2 - How would you screen for a tryptophan auxotroph?...Ch. 16.2 - Why is a small amount of histidine added to the...Ch. 16.2 - Retrieve, Infer, Apply Describe how replica...Ch. 16.2 - Retrieve, Infer, Apply Why are mutant selection...Ch. 16.2 - Retrieve, Infer, Apply Briefly discuss how...
Ch. 16.2 - Describe how you would isolate a mutant that...Ch. 16.2 - Prob. 5CCCh. 16.3 - How is mismatch repair similar to DNA polymerase...Ch. 16.3 - How is damaged DNA recognized by the UvrAB...Ch. 16.3 - Prob. 1CCCh. 16.3 - Retrieve, Infer, Apply What role does DNA...Ch. 16.3 - Retrieve, Infer, Apply When E. coli cells are...Ch. 16.3 - Explain how the following DNA alterations and...Ch. 16.4 - An antibiotic-resistance gene located on a...Ch. 16.4 - What four fates can DNA have after entering a...Ch. 16.4 - How does homologous recombination differ from...Ch. 16.5 - What features are common to all types of...Ch. 16.5 - How does a transposon differ from an insertion...Ch. 16.5 - What is simple (cut-and-paste) transposition? What...Ch. 16.5 - What effect would you expect the existence of...Ch. 16.6 - Prob. 1MICh. 16.6 - What is bacterial conjugation and how was it...Ch. 16.6 - For F+, Hfr, and F strains of E. coli, indicate...Ch. 16.6 - Describe how F+ F and Hfr conjugation processes...Ch. 16.6 - Compare and contract F+ F and F F conjugation.Ch. 16.7 - According to this model, what would happen if DNA...Ch. 16.7 - Prob. 1CCCh. 16.7 - Describe how transformation occurs in S....Ch. 16.7 - Discuss two ways in which artificial...Ch. 16.8 - Compare the number of transducing particles that...Ch. 16.8 - Why cant the gal and bio genes be transduced by...Ch. 16.8 - Describe generalized transduction and how it...Ch. 16.8 - What is specialized transduction and how does it...Ch. 16.8 - How might one tell whether horizontal gene...Ch. 16.8 - Why doesnt a cell lyse after successful...Ch. 16.8 - Describe how conjugation, transformation, and...Ch. 16.9 - As a replicative transposon, what would happen if...Ch. 16 - Prob. 1RCCh. 16 - Prob. 2RCCh. 16 - Prob. 3RCCh. 16 - Prob. 4RCCh. 16 - Prob. 5RCCh. 16 - Prob. 6RCCh. 16 - Mutations are often considered harmful. Give an...Ch. 16 - Mistakes made during transcription affect the cell...Ch. 16 - Suppose that transduction took place when a U-tube...Ch. 16 - Suppose that you carried out a U-tube experiment...Ch. 16 - Prob. 5ALCh. 16 - Prob. 6ALCh. 16 - Prob. 7AL
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What factors promote the fidelity of replication during synthesis of the leading strand of DNA? prevention of mismatched nucleotides at the replication fork by topoisomerase Watson-Crick base pairing between the template and leading strand breaks that occur in the leading strand are repaired by DNA ligase removal of the RNA primers between Okazaki fragments by DNA polymerase I removal of wrongly inserted nucleotides by the 3'-exonuclease activity of DNA polymerase IIIarrow_forwardList three ways in which an unrepaired double-stranded DNA break can be highly dangerous to the cell in which it occurs.arrow_forwardDefine the following terms related to DNA replication: origin of replication, helicase, single-strand binding proteins, topoisomerase, primase, RNA primer, DNA polymerase III, DNA polymerase I, and DNA ligase.arrow_forward
- discuss the consequences of replication errorsarrow_forwardIdentify and mark each of the following on the portion of DNA undergoing replication: replication fork, DNA polymerase, RNA primer, parent strands, leading strand, lagging strand, the direction of replication on each strand, and the 5' end of each strand. S.arrow_forwardMatch the following descriptions with the enzymes involved in DNA replication. 1. Adds an RNA primer to begin elongation 2. Removes the RNA primer from the beginning of the newly constructed strands 3. Splices lagging strand segments 4. Cleaves the rung of the DNA double helix ladder Description: DNA DNA Helicase Primase Enzyme: Polymerase Ligasearrow_forward
- a) "Out of three E.coli DNA polymerases, DNA polymerases 3 has a high processivity and rate of polymerization and therefore better suited for replication of the genome" What is meant by processivity? how does the DNA polymerase 3 maintain high processivity? b) What is a replication fork ?. Give the protein/enzymes of a replication fork and describe their function?arrow_forwardDNA polymerase I has 5'-3' polymerase activity, 5'-3' exonuclease activity, and 3'-5' exonuclease activity necessary for DNA replication. Mutations in the gene that encodes DNA polymerase I may cause the enzyme to lose these activities. Match the consequence of a loss-of-function mutation in DNA polymerase I to the corresponding lost activity. Lost 5'-3' polymerase activity no RNA primer removal during DNA replication no double helix denaturation Lost 5'-3' exonuclease activity Answer Bank decreased polymerase fidelity Lost 3'-5' exonuclease activity no DNA synthesis to fill gaps caused by removing RNA primers unstable strand separation within the replication bubblearrow_forwardb. The diagram below is of a short stretch of prokaryotic chromosomal DNA in the process of replication. Please supply the specific pieces of information requested by the boxes below. 1. What enzyme relaxes the supercoils? 2. What enzyme unwinds the DNA? 7. What does this arrow represent? 3. What enzyme synthesizes the RNA primer 8. Why should this single-stranded portion be stabilized? 4. What is this short segment of DNA called? 9. What enzyme synthesizes this long DNA segment? 5. What enzyme removes the RNA primer and replaces it with DNA? 10. Is this the leading or the lagging side? 6. What enzyme joins the short segments of DNA together? 3arrow_forward
- Match the bold DNA repair response(s) to the triggering type of DNA damage. Homologous Recombination Mishmatch Repair Base Excision Repair Nucleotide Excision Repair Non-homologous End Joining Single-strand DNA breaks Removal of repair lesions such as photoproducts caused by UV including Thymine dimers Double-Strand Break repair mechanism which is an accurate repair mechanism without any introduction of insertions or deletions. It requires a sister chromatid as a template. This repair mechanism uses just DNA glycosylase to remove Uracil (no other enzymes or complexes are required) then DNA polymerase can use the template stand to add the complementary base where the Uracil has been removedInterstrand Crosslink Repair This repair mechanism is used to recognize and repair mis-incorporation of base that can arise during DNA replication. Removal and replacement of modifying bases such as Uracil, 8-hyroxyguanine and others. Double-strand Break that is termed as “Quick and Dirty” as it is…arrow_forwardMatch each term with the correct letterarrow_forwardAssign the labels to their appropriate locations in the flowchart below, indicating the sequence of DNA replication events in the production of fragment B. (Note that pol I stands for DNA polymerase I, and pol III stands for DNA polymerase III.)arrow_forward
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