L111-Quiz2b-ans

L111-Quiz2b-ans - Indiana University Bloomington Evaluation...

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Indiana University Bloomington Evaluation Services and Testing QuizSite Students Quizzes · Tests · Evaluations · Surveys Activity Results: PracQ2b Student: shengeve (Susan Instructor: shengeve Course: L111 Section: 1142 Question 1. Which of these is arranged in the appropriate sequence from the earliest to the most recent? (1) origin of Earth (2) origin of eukaryotes (3) colonization of land by plants and fungi (4) beginning of the accumulation of atmospheric oxygen (5) origin of prokaryotes (6) origin of multicellular eukaryotes a. 1, 4, 5, 2, 3, 6 b. 1, 5, 2, 4, 3, 6 c. 1, 2, 4, 5, 6, 3 d. 1, 5, 4, 2, 6, 3 e. 5, 1, 2, 4, 6, 3 Your answer - d. 1, 5, 4, 2, 6, 3 - is correct! (1 / 1) Question 2. Which of the following would most likely occur if all prokaryotes were suddenly to perish? a. All life would eventually perish due to disease. b. Many organisms would perish as nutrient recycling underwent a dramatic reduction. c. All life would eventually perish because of increased global warming due to the greenhouse effect. d. Only the organisms that feed directly on prokaryotes would suffer any harmful effects. e. Very little change would occur because prokaryotes are not of signiFcant ecological importance. Your answer - b. Many organisms would perish as nutrient recycling underwent a dramatic reduction. - is correct! (2 / 2)
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Question 3. Which of the following does NOT contribute to the variation seen in prokaryotes? a. meiosis b. mutations c. conjugation d. virus vectors (transduction) e. "a" and "c" Your answer - a. meiosis - is correct! (3 / 3) Question 4. The following statement about prokaryotes are all correct EXCEPT ______. a. are important decomposers in ecosystems b. have every mode of nutrition and metabolism, distributed among the various species c. include some species that can use crude oil as a nutrition source d. have a simple genome containing one chromosome and some circular plasmids e. are morphologically very similar and can only be classiFed using molecular
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This note was uploaded on 01/18/2012 for the course BIOL L111 taught by Professor Dr.susanhengeveld during the Fall '11 term at Indiana.

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L111-Quiz2b-ans - Indiana University Bloomington Evaluation...

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