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Unformatted text preview: Chapter 04 - Test Bank: General Features of Cells 1. Which of the following are principles of the cell theory or cell doctrine? E. All living organisms are composed of one or more cells, cells are the smallest units of life, and new cells come only from pre-existing cells by cell division. 2. Which two cell scientists are credited with the formulation of the cell theory, also known as the cell doctrine? B. Schleiden and Schwann 3. This is a tool that enables researchers to study the structure and function of cells. B. microscope 4. With which type of microscopy would one observe three-dimensional structure? C. confocal microscopy 5. Which of the following reflects a primary difference between transmission and scanning electron microscopy? D. Transmission electron microscopy shows two-dimensional ultrastructure, while the scanning electron microscopy shows three-dimensional structure. 6. Which of the following type of microscopy would be most effective in visualizing the fine structure of viruses and cytoskeletal filaments 1025 nanometers in diameter? C. transmission electron microscopy 7. Among those listed, which type of microscopy would provide the highest resolution? B. scanning electron microscopy 8. Prokaryotes A. lack a true nucleus. 9. Which of the following structures distinguishes plant cells from animal cells? A. chloroplast 10. Which of the following is NOT true of prokaryotes? D. They possess membrane-bound organelles. 11. The cell wall is a common feature to D. prokaryotic and plant cells. 12. Plasma membranes are a feature of A. all cells. 1-1 Chapter 04 - Test Bank: General Features of Cells 13. During a period of low water availability, which prokaryotic structure would protect a cell from dessication (drying out)? D. cell wall 14. The nucleus is to eukaryotes as the ________ is to prokaryotes. D. nucleoid 15. Which of the following might account for the general structural and functional differences between a nerve and smooth muscle cell within an individual? D. The proteome and the relative amounts of certain proteins differ between muscle and nerve cells. 16. FtsZ, MreB, and CreS proteins regulate the shape and structure of bacterial (prokaryotes) cells. These proteins are homologous to what structure in eukaryotes? C. cytoskeleton 17. Which of the statements about the synthesis of polypeptides (proteins) is INCORRECT? C. The synthesis of proteins is a catabolic process. 18. Which cytoskeletal structures represent a highly diverse group of tension-bearing fibers important to the maintenance of cell shape? B. intermediate filaments 19. The cytoskeleton and motor proteins are important for which of the following processes?...
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- Spring '10
- Cell Theory