172Practice+Questions+Exam+1

172Practice+Questions+Exam+1 - Practices Questions These...

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Unformatted text preview: Practices Questions These are from the lectures, for the most part. Exam Practice Question You sequence a portion of rRNA from three species. The sequences are: Species A: A A C T A G C G C G A T Species B: A A C T A G C G C C A T Species C: T T C T A G C G G T A T Which tree drawn below best fits the data? A B C A B C A B C A B C 1 2 3 4 Figure 1-10b Typical feeding posture Why Do Giraffes Have Long Necks? Figure 1-11 Wild chilies produce fruits that contain seeds. Cactus mice are seed eaters. Curve-billed thrashers are fruit eaters. Why Are Chili Peppers Hot? Figure 1-12-experiment How can the Gecko crawl straight up a wall? Hint: many weak forces applied together => strength! Why did the five-kingdom system of classification fall out of favor? A. It was too complexthe original two-kingdom system of Linnaeus was more useful. B. Many organisms were difficult to classify because they had characteristics of more than one kingdom. C. There were too many prokaryotes to be included in a single kingdom. D. It did not reflect the actual evolutionary relationships among organisms very well. What type of bond is most likely to be formed between two atoms with very different electronegativities? A. hydrogen bond B. ionic bond C. polar covalent bond D. nonpolar covalent bond How does the word theory in science differ from its use in everyday English? A. There is no differencethe usages are interchangeable. B. A scientific theory is always right and never changes. C. Scientific theories are testable explanations, not speculative guesses. D. A scientific theory can be confirmed by experiments designed to prove its accuracy. Why did the five-kingdom system of classification fall out of favor? A. It was too complexthe original two- kingdom system of Linnaeus was more useful. B. Many organisms were difficult to classify because they had characteristics of more than one kingdom. C. There were too many prokaryotes to be included in a single kingdom. D. It did not reflect the actual evolutionary relationships among organisms very well. What type of bond is most likely to be formed between two atoms with very different electronegativities? A. hydrogen bond B. ionic bond C. polar covalent bond D. nonpolar covalent bond How does the word theory in science differ from its use in everyday English?...
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172Practice+Questions+Exam+1 - Practices Questions These...

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