Biology (MindTap Course List)
10th Edition
ISBN: 9781285423586
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Textbook Question
Chapter 12, Problem 3TYU
In the Hershey-Chase experiment with bacteriophages, (a) harmless bacterial cells permanently transformed into virulent cells (b) DNA was shown to be the transforming factor of earlier bacterial transformation experiments (c) the replication of DNA was conclusively shown to be semiconservative (d) viral DNA was shown to enter bacterial cells and cause the production of new viruses within the bacteria (e) viruses injected their proteins, not their DNA, into bacterial cells
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All of the following apply to Luria and Delbruck’s 1943 study of mutation rates in E. Coli and T1 phage except:
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Chapter 12 Solutions
Biology (MindTap Course List)
Ch. 12.1 - Summarize the evidence that accumulated during the...Ch. 12.1 - Prob. 2LOCh. 12.1 - Prob. 1CCh. 12.1 - Prob. 2CCh. 12.2 - Explain how nucleotide subunits link to form a...Ch. 12.2 - Describe how the two strands of DNA are oriented...Ch. 12.2 - Prob. 5LOCh. 12.2 - Prob. 1CCh. 12.2 - Prob. 2CCh. 12.2 - Prob. 3C
Ch. 12.3 - Cite evidence from Meselson and Stahls experiment...Ch. 12.3 - Prob. 7LOCh. 12.3 - Explain the complexities of DNA replication that...Ch. 12.3 - Discuss how enzymes proofread and repair errors in...Ch. 12.3 - Prob. 10LOCh. 12.3 - How did the ability to distinguish old and newly...Ch. 12.3 - What feature of DNA structure causes DNA...Ch. 12.3 - What is the reason that eukaryotic cells require...Ch. 12 - When Griffith injected mice with a combination of...Ch. 12 - Which of the following inspired Avery and his...Ch. 12 - In the Hershey-Chase experiment with...Ch. 12 - The two complementary strands of the DNA double...Ch. 12 - If a segment of DNA is 5 CATTAC 3, the...Ch. 12 - Each DNA strand has a backbone that consists of...Ch. 12 - The experiments in which Meselson and Stahl grew...Ch. 12 - The statement DNA replicates by a semiconservative...Ch. 12 - Topoisomerases (a) synthesize DNA (b) synthesize...Ch. 12 - A lagging strand forms by (a) joining primers (b)...Ch. 12 - The immediate source of energy for DNA replication...Ch. 12 - Which of the following statements about eukaryotic...Ch. 12 - Prob. 13TYUCh. 12 - Prob. 14TYUCh. 12 - Prob. 15TYUCh. 12 - INTERPRET DATA In the Hershey-Chase experiment,...Ch. 12 - EVOLUTION LINK How does DNA being the universal...
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- Which of the following statements best explains why there are fewer colonies on plate IV than on plate III? (a) Plate IV is the positive control. (b) Not all bacterial cells were successfully transformed. (c) The bacteria on plate III did not mutate. (d) The plasmid inhibited bacterial growth. (e) Plate IV is the negative control.arrow_forwardCommon vectors used to transfer a piece of DNA into a cloning host are ________. A) artificial chromosomes B) bacteriophages C) All of the choices are correct D) viruses E) plasmidsarrow_forwardYou discover an E. coli mutant that has a non-functional DNA polymerase III. Such a bactèria; a) Would not be able to synthesize new strands of DNA b) Would not be able synthesize the leading strand of DNA Oc) Would produce new strands of DNA still containing short RNA primers Od) Would be able to synthesize the lagging strand of DNA onlyarrow_forward
- All questions a) What is the hypothesis of Griffith’s experiment? b) Why did mouse No. 3 survived? c) Why did mouse No. 4 died? d) If Griffith had injected a fifth mouse with a combination of heat-killed R strain bacteria and heat-killed S strain bacteria, would the mouse have died? Give your reason.arrow_forwardWith respect to recombinant vaccines, it is CORRECT to state that: * (Only one statement is correct) (a) Protein subunit vaccines are formulated with the expression vector encoding the immunogenic protein or protein fragment (b) Recombinant carrier organisms are genetically modified to contain the pathogenic protein of the organism that will be the target of the vaccine (c) Nucleic acid vaccines are formulated with DNA or RNA molecules that, once internalized by cells, will generate recombinant proteins that will trigger the immune response against the desired pathogen (d) Unlike DNA vaccines, mRNA vaccines do not need to be internalized by cells, being recognized as foreign molecules to the organism that received them. (e) Laboratory-produced phages can be used as delivery tools in DNA vaccines, which will allow the expression of immunogenic proteins to the organism that received them (f) Pseudoviral particles (VLPs) are produced in cells that receive expression vectors…arrow_forwardThe Drug AZT is used to treat AIDS, This drug is a _____ Inhibitor/Activator of _____ a) Competitive; Activator; DNA polymerase b) Noncompetitive; Inhibitor; DNA polymerase c) Competitive; Inhibitor; Reverse Transcriptase d) Noncompetitive; Activator; Reverse Transcriptasearrow_forward
- A virophage is best descirbed as:(a) A bacteriophage that requires a helper virus(b) An animal virus that can also infect bacteria(c) A giant virus(d) A phage that is used therapeutically to treat bacterialinfections(e) A satellite virus that inhabits its helper virus (i.e., itshost virus)arrow_forward(a) Give any two differences between DNA and RNA. (b) What is recombinant DNA? Give two beneficial proteins produced from recombinant DNA technology. (c) How do nucleoside analogs disrupt life cycle of HIV-1 virus?arrow_forward11 Enzyme assay A) Always involves asking a substrate B) Can be very smoke or very complex C) Always involves ultraviolet light D) A-C are incorrect 12 Isolation of chromosomal (total) DNA using a spin column A) Involves a filtration step to remove many different molecules B) Lysis is an optional step C) Elution is not necessary D) Results in a very pure protein preparation 13 Isolation of chromosomal (total) DNA using a spin column A) Cells must be used using an appropriate method B) Cell lysis is required C) Elution of DNA required regardless of the cell type used in the experiment D) A-C are correct. 14 Isolation of chromosomal (total) DNA using a spin column A) Washing the spin column is optional B) DNA must be eluted from the spin column C) Does not involve centrifugation D) Only molecules that are supposed to bind to the column do so.arrow_forward
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