Modified MasteringMicrobiology with Pearson eText -- ValuePack Access Card -- for Microbiology with Diseases by Body System
5th Edition
ISBN: 9780134608785
Author: Robert W. Ph.D. Bauman
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 6MC
Which of the following molecules functions as a “proofreader” for a newly replicated strand of DNA?
- a. DNA polymerase III
- b. primase
- c. helicase
- d. ligase
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Students have asked these similar questions
In the dideoxy-sequencing reaction, what terminates DNA synthesis at a particular base? a. The absence of a base on the ddNTP halts the DNA polymerase. b. The ddNTP causes a break in the sugar–phosphate backbone. c. DNA polymerase will not incorporate a ddNTP into the growing DNA strand. d. The absence of a 3′-OH group on the ddNTP prevents the addition of another nucleotide.
What 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 DNA
DNA polymerase III is a processive enzyme, which means that
a. it does not dissociate from the growing strand after it has attached a nucleotide to the 3′ end.
b. it makes a new strand very quickly.
c. it proceeds toward the opening of the replication fork.
d. it copies DNA with relatively few errors.
Chapter 7 Solutions
Modified MasteringMicrobiology with Pearson eText -- ValuePack Access Card -- for Microbiology with Diseases by Body System
Ch. 7 - DNA replication requires a large amount of energy,...Ch. 7 - Vibrio vulnificus Infection Greg enjoyed Floridas...Ch. 7 - Prob. 2TMWCh. 7 - Prob. 3TMWCh. 7 - Why is the genetic ancestry of microbes much more...Ch. 7 - Prob. 1CCSCh. 7 - Which of the following is most likely the number...Ch. 7 - Which of the following is a true statement...Ch. 7 - A plasmid is ___________. a. a molecule of RNA...Ch. 7 - Prob. 4MC
Ch. 7 - Prob. 5MCCh. 7 - Which of the following molecules functions as a...Ch. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - The Ames test ___________. a. uses auxotrophs and...Ch. 7 - Which of the following methods of DNA repair...Ch. 7 - Prob. 11MCCh. 7 - Prob. 12MCCh. 7 - Which of the following statements is true? a....Ch. 7 - Prob. 14MCCh. 7 - Although two cells are totally unrelated, one cell...Ch. 7 - Prob. 16MCCh. 7 - Prob. 17MCCh. 7 - Prob. 18MCCh. 7 - Prob. 19MCCh. 7 - Prob. 20MCCh. 7 - Prob. 21MCCh. 7 - Prob. 22MCCh. 7 - Prob. 23MCCh. 7 - Before mutations can affect a population...Ch. 7 - Prob. 25MCCh. 7 - Fill in the Blanks 1. The three steps in RNA...Ch. 7 - Fill in the Blanks 2. A triplet of mRNA...Ch. 7 - Fill in the Blanks 3. Three effects of point...Ch. 7 - Fill in the Blanks 4. Insertions and deletions in...Ch. 7 - Fill in the Blanks 5. An operon consists of...Ch. 7 - Prob. 6FIBCh. 7 - Prob. 7FIBCh. 7 - Fill in the Blanks 8. A gene for antibiotic...Ch. 7 - Fill in the Blanks 9. ______ are nucleotide...Ch. 7 - Fill in the Blanks 10. ____________ is a...Ch. 7 - Fill in the Blanks 11.________ RNA carries amino...Ch. 7 - Fill in the Blanks 12. ______ RNA and ______ RNA...Ch. 7 - How does the genotype of a bacterium determine its...Ch. 7 - List several ways in which eukaryotic messenger...Ch. 7 - Compare and contrast intrans and exons.Ch. 7 - Polypeptide synthesis requires large amounts of...Ch. 7 - Describe the operon model of gene regulation.Ch. 7 - Prob. 6SACh. 7 - Prob. 7SACh. 7 - Describe the formation and function of mRNA, rRNA,...Ch. 7 - Prob. 9SACh. 7 - Explain the central dogma of genetics.Ch. 7 - Compare and contrast the processes of...Ch. 7 - Fill in the following table:Ch. 7 - On the figure below, label DNA polymerase I, DNA...Ch. 7 - Prob. 2VICh. 7 - The drugs ddC and AZT are used to treat AIDS....Ch. 7 - If molecules of mRNA have the following nucleotide...Ch. 7 - A scientist uses a molecule of DNA composed of...Ch. 7 - Explain why an insertion of three nucleotides is...Ch. 7 - How could scientists use siRNA to turn off a...Ch. 7 - Prob. 5CTCh. 7 - Prob. 6CTCh. 7 - Prob. 7CTCh. 7 - Prob. 8CTCh. 7 - Corynebacterium diphtheriae, the causative agent...Ch. 7 - Prob. 10CTCh. 7 - The endosymbiotic theory states that mitochondria...Ch. 7 - Hydrogen bonds between complementary nucleotides...Ch. 7 - On average, RNA polymerase makes one error for...Ch. 7 - We have seen that wobble makes the genetic code...Ch. 7 - If a scientist synthesizes a DNA molecule with the...Ch. 7 - What DNA nucleotide triplet codes for codon UGU?...Ch. 7 - Suppose you want to insert into your dog a gene...Ch. 7 - Using the following terms, fill in the following...
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- What feature of a DNA fragment causes it to move through a gel during electrophoresis? a. the electrical charges of its phosphate groups b. its nucleotide sequence c. the hydrogen bonds between its base pairs d. its double helix shapearrow_forwardDuring DNA replication, the helicase enzyme binds to DNA and Select one: a. prevents the DNA strands from rewinding back into the helical shape b. cuts the double stranded DNA into single strands c. provides the starting point where new nucleotides can be added d. adds new nucleotides to the template strandarrow_forwardWhat is DNA polymerase? A. An enzyme that corrects mutations that arise during the replication of DNA B. An enzyme that seals any gaps that remain between bases of replicating strands of DNA C. Short, single strand of DNA that base-pairs with a specific DNA sequence D. An enzyme that carries out DNA replicationarrow_forward
- DNA Polymerase holoenzymes used for DNA replication recognizes A. double-stranded sequences as starting points B. methylated lipids as start points C. acetylated lipids as start points D. single stranded sequences as starting pointsarrow_forwardTo make a new DNA strand, which of the following is necessary? a. A template strand c. Heavy nitrogen b. Nucleotides d. Both a and barrow_forwardWhich mechanism requires the ability to distinguish between newly synthesized and template strands of DNA? a. Nucleotide selection b. DNA proofreading c. Mismatch repair d. All of the abovearrow_forward
- DNA polymerase requires the following for replication: A. Single stranded ("unzipped") DNA B. Double stranded ("zipped") DNA C. An RNA primer D. A and C E. B and Carrow_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_forwardIn DNA replication, the enzyme helicase breaks hydrogen bonds between complementary nucleotides and causes the double-stranded DNA to become single-stranded (denatures the DNA). What is used in PCR to break the hydrogen bonds between complementary nucleotides? A) buffers B) DNases C) taq Polymerase D) heat E) helicasearrow_forward
- From which end of a strand of nucleic acid does DNA polymerase I REMOVE nucleotides? A) 5' B) 3' C) 2' D) N-term E) C-termarrow_forwardThe problem of replicating the lagging strand—that is, adding bases in the 3’ to 5’ direction—is solved by DNA through the use of (a) base pairing (b) replication forks (c) helicase (d) Okazaki fragments (e) topoisomerasearrow_forwardBase analogs are mutagenic because of which characteristic? a. They produce changes in DNA polymerase that cause it to malfunction. b. They distort the structure of DNA. c. They are similar in structure to the normal bases. d. They chemically modify the normal bases.arrow_forward
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