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Biology exam 2 - BLY 121 Exam 1 Covering Chapter 7-12 Fall...

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BLY 121- Exam 1 Covering Chapter 7-12 C. S. Major Fall 2005 Chapter 7 1. Which of the following represents a major differencebetween prokaryotic cells and eukaryotic cells? A. Prokaryotes, not eukaryotes, have cell walls. B. Eukaryotic cells have a membranebound nucleus, tend to have a much more extensive inner membranesystem, and a larger numbers of intracellular organelles than do prokaryotes. C. Prokaryotes are unable to carry out aerobic respiration, a process that requires a complex inner-membranesystem. D. Prokaryotes are a more homogenous group of organismsthan are eukaryotes, which include protozoa, plants, and animals. 2. What is the function of the nuclear pore complex? 3. What path doesa protein in the secretory pathway take, starting from the site of its synthesis? 4. Which of the following statements is a fundamental differencebetween plant and animal cells? 5. Where are proteins synthesized? A. ribosomes B. chloroplasts C. smooth ER D. nucleus 6. Which of the following cytoskeletal proteins are involved in changing cell shapeor in cell movement? Chapter 8 7. Cells interact with other cells and their environment through the action of their: 1
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8. Transport of materials acrossa cell membrane: A. is an energy-requiring process regardless of the chemical properties of the substancebeing transported B. always takes place from a region of greater concentration to a region of lesser concentration C. is selective D. requires a carrier molecule in the membrane
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