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Unformatted text preview: Cells 1. Of the following, which are found in eukaryotic cells that are not found in prokaryotic cells? a. Sdlk b. Membrane-bound organelles c. None of the above i. Answer: C 2. In what type of cells do you expect to find a particularly high level of rough ER? a. Pancreas cells b. Muscle cells c. Kidney cells d. Cells of the ovaries, testes, and adrenal glands i. Answer: A 3. In what type of cells do you expect to find a particularly high level of smooth ER/ a. Pancreas cells b. Muscle cells c. Kidney cells d. Cells of the ovaries, testes, and adrenal glands i. Answer: D 4. What is therefore another organ that would be expected to have cells with a high level of smooth ER (serving in detoxification)? a. The liver 5. Since mitochondria and chloroplasts have their own DNA, what else would you expect them to have? a. Amino acids b. Ribosomes c. RNA d. Proteins e. All of the above i. Answer: E 6. Animals have mitochondria for the breakdown of energy-rich sugars as an energy source fo the cell's activities, whereas plant cells with chloroplasts do not need mitochondria. a. True b. False i. Answer: B Membranes 7. Which type of fatty acid would be more abundant in the membranes of plants, algae, animals, and bacteria in cold environments? a. Saturated b. Unsaturated i. Answer: B 8. Which type of fatty acid would offer the greatest benefit for membranes of algae and plants in the coldest habitats on Earth? a. Saturated b. Monounsaturated c. Polyunsaturated i. Answer: C 9. Which type of fatty acid would be more abundant in the membrane phospholipids of plants, algae, animals, and bacteria from hot environments? a. Saturated b. Unsaturated i. Answer: A 10. In addition to its relatively small size, what other characteristic of molecular oxygen O2 (O=O) allows it to pass easily through a membrane? a. Molecular oxygen is hydrophilic b. Molecular oxygen is polar c. In molecular oxygen, both atoms attract the negative electrons equally strongly d. Molecular oxygen is non-polar e. Both C and D i. Answer: E 11. Is a protein needed for movement of: a. Non-polar hydrophobic substances? No b. For polar hydrophilic substances? Yes 12. Is ATP energy needed for movement of: a. When substances move from high to low concentration? No b. When substances are moved from low to high concentration? Yes 13. Which of the following is most likely not true for the co-transport of sucrose of...
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- Fall '07
- Adenosine triphosphate, electron t ransport, energy-r ich molecules