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Ch12_Test_File - Chapter 12 From DNA to Protein Genotype to...

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Chapter 12: From DNA to Protein: Genotype to Phenotype TEST FILE QUESTIONS Multiple Choice 1. The toxin ricin can be fatal; it works by a. breaking peptide bonds and destroying healthy proteins. b. killing the cell by blocking protein synthesis. c. blocking the synthesis of bacterial cell walls. d. producing a lethal toxin that affects mRNA and ribosomal movement. e. inhibiting the translocation of mRNA along the ribosome. Textbook Reference: 12.0 Toxic Avenger at the Ribosome, p. 256 2. Genetic material is composed of Textbook Reference: 12.1 What Is the Evidence that Genes Code for Proteins? p. 257 3. The major phenotypic expression of genotype is in Textbook Reference: 12.1 What Is the Evidence that Genes Code for Proteins? p. 257 4. Which of the following are model organisms used in biological research? d. Bread mold e. All of the above Textbook Reference: 12.1 What Is the Evidence that Genes Code for Proteins? p. 257 5. After irradiating Neurospora , Beadle and Tatum collected mutants that would a. not grow on a minimal medium but would grow on a minimal medium with arginine. b. grow on any minimal medium. c. not grow on any minimal medium. d. grow on a minimal medium but would not grow on a minimal medium with arginine. e. None of the above Textbook Reference: 12.1 What Is the Evidence that Genes Code for Proteins? p. 258 6. Within a group of mutants with the same growth requirement (i.e., the same overt
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phenotype), mapping studies determined that individual mutations were on different chromosomes. This indicates that a. the same gene governs all the steps in a particular biological pathway. b. different genes can govern different individual steps in the same biological pathway. c. different genes govern the same step in a particular biological pathway. d. all biological pathways are governed by different genes. e. genes do not govern steps in biological pathways. Textbook Reference: 12.1 What Is the Evidence that Genes Code for Proteins? p. 258 7. The study of Neurospora mutants grown on various supplemented media led to Textbook Reference: 12.1 What Is the Evidence that Genes Code for Proteins? p. 258
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