Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 20, Problem 2TYK
Summary Introduction
Introduction: Genetic engineering, genetic modification, and recombinant DNA technology involve the modification of organism artificially. Genetic engineering involves various techniques used to cut up and join the genetic material from different species to form hybrid and the introduction of hybrid into an organism to form new combinations of genome.
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Chapter 20 Solutions
Study Guide for Campbell Biology
Ch. 20 - In what ways would third-generation sequencing be...Ch. 20 - The following schematic diagram depicts an...Ch. 20 - Which of the following DNA sequences would most...Ch. 20 - a. When PCR is used to prepare a DNA fragment for...Ch. 20 - a. What are some of the benefits of determining...Ch. 20 - Prob. 6IQCh. 20 - What are some of the practical and ethical...Ch. 20 - Prob. 8IQCh. 20 - Prob. 1SYKCh. 20 - Fill in the table on the previous page on the...
Ch. 20 - Prob. 3SYKCh. 20 - Prob. 1TYKCh. 20 - Prob. 2TYKCh. 20 - Gel electrophoresis is a means of separating...Ch. 20 - Prob. 4TYKCh. 20 - Prob. 5TYKCh. 20 - The following segment of DNA has restriction sites...Ch. 20 - Prob. 7TYKCh. 20 - Prob. 8TYKCh. 20 - Prob. 9TYKCh. 20 - Prob. 10TYKCh. 20 - Prob. 11TYKCh. 20 - Which enzyme is used in the polymerase chain...Ch. 20 - Prob. 13TYKCh. 20 - STRs (short tandem repeats) are a valuable tool...Ch. 20 - Prob. 15TYKCh. 20 - Which of the following has the greatest potential...Ch. 20 - Prob. 17TYKCh. 20 - Petroleum-lysing bacteria are being engineered for...Ch. 20 - Prob. 19TYKCh. 20 - Prob. 20TYK
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- Nonsense mutations occur when: A.The new codon causes an incorrect amino acid to code for an incorrect protein B.The loss or gain of 1 or 2 nucleotides that affects the coding for a protein. C.An alteration in sequence results in a new codon that causes the code to create an incomplete protein. D.Chromosomes break, causing a loss of DNA E.Genes in chromosome mutate and code for incorrect DNAarrow_forwardWhich of the following is NOT a method by which bacteria can be resistant to antibiotics? Select one: a. Utilise an alternate pathway of gene expression that is not targeted by the antibiotic. b. Alter the binding site of the antibiotic, to either prevent it binding, or remove it from the site. c. Production of enzymes that bind to and break down the specific antibiotic. d. Production of a cell membrane pump that translocates antibiotics outside the cell. A potential side effect of antibiotic use is a secondary bacterial or fungal infection, usually associated with regions like the skin, upper-respiratory tract or genitalia. What is the most likely reason for the formation of these secondary infections? Select one: a. Antibiotics do not work on viruses, so they are able to establish infections in these locations. b. Organisms that are antibiotic resistant are usually more virulent, meaning they can survive and cause infection. c. The antibiotic kills off normal flora, providing an…arrow_forwardWhich of the following is true of reverse transcriptase?a. It is required for the movement of DNA transposons.b. It catalyzes the synthesis of DNA from RNA.c. It is required for the transposition of retrotransposons.d. b and c are correct.arrow_forward
- Which of the following statements about coding strands of a gene is false? a. The sequence of the coding strand is complementary to the primary transcript. b. The sequence of the coding strand is complementary to the template strand. c. The coding strand may be on either strand of a given chromosome. d. All of the above are true about the coding strand.arrow_forwardWhich of the following is the most likely effect of a mutation in the gene coding for a DNA repair enzyme? a.The mutated gene will not be transcribed because RNA polymerase cannot transcribe mutated DNA. b.Mutations will accumulate more quickly because the cell will not be able to fix errors in replication. c.The cell will immediately undergo apoptosis so that mutated DNA is not replicated in future rounds of cell division. d.The cell containing the mutation will divide more frequently because the cell cycle checkpoints will not function properly.arrow_forwardStem cells (cells with little or no determination) are useful in many kinds of biological research for which of the following reasons? Group of answer choices A. they do not have particular cell fates B. None of their DNA is methylated C. They have unique cytoplasmic determinants D. They have no microRNA E. They have not differentiatedarrow_forward
- . Which of the following characteristics of chloroplastsand/or mitochondria make them seem more similar tobacterial cells than to eukaryotic cells?a. Translation is sensitive to chloramphenicol anderythromycin.b. Alternate codons are used in mitochondria genes.c. Introns are present in organelle genes.d. DNA in organelles is not arranged innucleosomes.arrow_forwardA research laboratory uses a cancer cell line that has undergone thousands of cell cycle divisions in the laboratory without any change in the length of its chromosomes. The most likely reason the chromosomes aren’t shortening is that the cancer cells are expressing Select one: a. very low levels of telomerase. b. high levels of telomerase. c. high levels of RNA polymerase. d. DNA polymerases with high fidelity. e. high levels of ligase activity.arrow_forwardA.) DNA encodes for the cell genome and is therefore a permanent copy to have a functioning cell. B.)Different changes to the structure of messenger RNA can cause mutations and genomic instability which could lead to abnormal cells in the body. a. Statement A is correct b. Statement B is correct c. Both A and B are correct d. Both A and B are incorrectarrow_forward
- The function of the genetic code is toa. promote transcription.b. specify the amino acids within a polypeptide.c. alter the sequence of DNA.d. none of the abovearrow_forwardIf a mutation deletes the promoter in a eukrayotic gene, which of the following most accurately describes its consequence? A. There will be no mRNA or polypeptide made. B. The mRNA will be made but no polypeptide is made. C. The mRNA will not be processed properly. D. Nothing will happen. It is a silent mutation.arrow_forwardIn prokaryotes, control of gene expression usually occurs at the a. splicing of pre-mRNA into mature mRNA. b. initiation of translation. c. initiation of transcription. d. All of the choices are correct.arrow_forward
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