CH 12 HW - TAKE HOME QUIZZ # 6. ON CHAPTER 12 (40 Points)...

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TAKE HOME QUIZZ # 6. ON CHAPTER 12 (40 Points) DNA STRUCTURE AND FUNCTION Multiple-Choice Questions (0.5 points each) 1. Johann Miescher is credited with a. proposing DNA as the hereditary material. b. finding a cure for pneumonia. c. telling us that A=T and G=C. d. discovering nucleic acids. e. using bacteriophages to confirm the structure of DNA. 2. When Fred Griffith injected mice with a mixture of dead, pathogenic, encapsulated S cells and living unencapsulated R cells of Streptococcus pneumoniae, he discovered that a. the previously harmless strain (S) had inherited the ability to kill mice. b. the dead mice teemed with living pathogenic (R) cells. c. the killer strain (R) was encased in a protective capsule. d. the dead mice teemed with living pathogenic (R) cells and the killer strain (R) was encased in a protective capsule. e. all of these 3. Fred Griffith’s experiments a. produced a vaccine against bacterial pneumonia. b. demonstrated that rough (R) bacteria cause pneumonia. c. provided evidence that genetic material from one bacterial culture could be transferred to another culture. d. showed that rough bacteria injected into mice will be changed by the mice to smooth (S) bacteria. e. converted harmless smooth bacteria into lethal rough bacteria. 4. Bacteriophages are a. large bacteria. b. pathogens (disease-producing bacteria). c. viruses. d. cellular components. e. protistans.             5.        Nucleic acid contains a. sulfur. b. phosphorus. c. potassium. d. iron. e. manganese. 6. The experiments of which of the following researchers clearly distinguished DNA as the hereditary material (as opposed to protein)? a. Pauling b. Hershey and Chase c. Griffith d. Watson and Crick e. Avery 7. Sulfur is a. found in proteins, but not nucleic acids. b. a vital component of nucleic acids. c. found in nucleic acids, but not proteins. d. needed for bacteriophages to attach to bacteria. e.
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CH 12 HW - TAKE HOME QUIZZ # 6. ON CHAPTER 12 (40 Points)...

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