Answer keys - Answer key to first practice test for exam 2...

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Answer key to first practice test for exam 2 1. B - Know the definitions for phototroph, chemotroph, lithotroph, organotroph, autotroph, and heterotroph. 2. C - Ionizing radiation would be the only choice that would effectively penetrate all layers of the plastic. 3. C - Know the terms used to describe organisms’ oxygen requirements. Strict anaerobes are killed in the presence of oxygen. 4. E - Understand the descriptors used for pH, pressure, salt, osmotic activity, temperature tolerance. 5. C - Sulfur is contained in the amino acids cysteine and methionine. 6. A 7. E 8. A 9. D - A chemostat is used to maintain a continuous cell culture. 10. B - Understand how doubling time works. 11. C 12. D 13. C - Understand the characteristics of passive diffusion, facilitated diffusion, and active transport. 14. D 15. C - Understand the characteristics of the differing phases of microbial growth. 16. B - In experiments utilizing bacteria, many specifically call for bacteria in log phase because they are the most uniform during this phase of growth.
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This note was uploaded on 05/05/2008 for the course BIO 103 taught by Professor Dao during the Spring '08 term at Drake University .

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Answer keys - Answer key to first practice test for exam 2...

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