Biol1510 Exam 1 sample questions

Biol1510 Exam 1 sample questions - 1. The purpose of an...

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1. The purpose of an experiment should be to: a. provide evidence to support a hyothesis b. permit the investigator to reject one or more alternative hypotheses c. prove the investigator’s hypothesis d. measure variables with accuracy and precision e. any of the above 2. Which of the following is not a feature of scientific hypotheses? a. They generate predictions. b. They can be tested by observational analysis. c. They can be tested by experimentation. d. They are based on observations e. They are true. 3. The appearance of multicellular organisms coincided with increased levels of _______ in Earth's atmosphere. a. helium b. hydrogen c. nitrogen d. carbon dioxide e. oxygen 4. Overall biotic diversity, as determined by the number of taxonomic families, a. Has increased steadily over geological time and is greatest today. b. Peaked immediately after the Cambrian explosion. c. Peaked just before the mass extinction at the end of the Permian period. d. Has increased over geological time, rebounding after periodic mass extinctions and is greatest in the current era. e. Peaked just before the mass extinction at the end of the Cretaceous period. 5. Which of the following is NOT true of evolution by natural selection? a. results in evolutionary adaptation of a population b. requires genetic variation c. involves differential reproductive success d. is a random process e. works at the level of individual organisms 6. Volcanic rocks may be dated to the end of the Permian mass extinction by what method? a. carbon-14 dating b. analyzing embedded fossils c. potassium-argon dating d. any of the above e. none of the above Name: _______________________________ p. 1 of 10
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Biology 1510 Spring 2008: Exam 1 (version 1) 7. Over the last 600 million years, the climate of Earth a. has alternated between warmer and cooler periods, and is currently in a cool period. b. has alternated between warmer and cooler periods, and is currently in a warm period. c. has alternated between warmer and cooler periods, and is currently near the average. d. has been steady, with only small, brief changes in mean global temperature. e. has warmed steadily to its warmest point today. 8. The initial accumulation of oxygen in the atmosphere was the result of photosynthesis from an organism most like modern a. cyanobacteria. b. algae. c. mosses. d. archaea. e. none of the above. 9. One type of evidence for evolution of oxygen-producing photosynthetic organisms as early as 2.3 billion years ago comes from: a. fossils of land plants. b. microfossils showing primitive cells resembling modern bacteria c. banded iron formations. d. the Miller-Urey experiment e. the record of geomagnetic reversals on the ocean floor 10. Which of the following have been synthesized in laboratory experiments studying the origin of life? a.
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Biol1510 Exam 1 sample questions - 1. The purpose of an...

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