Biology_1408_Unit_2_Study_Guide

Biology_1408_Unit_2_Study_Guide - Biology 1408 Unit 2 Study...

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Biology 1408 Unit 2 Study Guide      1. Which of the following is(are) not components of all cells?      a. plasma membrane   b. DNA   c. cytoplasm   d. nucleus   e. plasma membrane and nucleus      2. If the diameter of a cell goes from 1 to 2, its volume increases ____ times.      a. 1.5   b. 2   c. 4   d. 8   e. 16      3. If the diameter of a spherical cell goes from 1 to 2, its volume goes from 0.5 to      a. 1.0   b. 1.5   c. 2.0   d. 4.0   e. 8.0      4. If the diameter of a cell goes from 1 to 2, its surface area increases ____ times.   
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   a. 1.5   b. 2   c. 4   d. 8   e. 16      5. If the diameter of a spherical cell goes from 1 to 2, its surface area goes from 3 to      a. 4*   b. 6*   c. 8*   d. 12   e. 16      6. Large cells work better if they      a. are spherical   b. are flat/thin   c. have folded membranes   d. are both spherical and have folded membranes   e. are both flat/thin and have folded membranes      7. Resolution in a microscope is dependent on the ____ of the beam.      a. amplitude   b. wavelength  
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c. speed   d. both amplitude and wavelength   e. both amplitude and speed      8. One portion of the cell theory states that      a. All cells have a nucleus.   b. All cells divide by meiosis.   c. All living organisms are made up of one or more cells.   d. Cells arise through spontaneous generation.   e. Growth is solely the result of cell division.      9. The smallest object that can be resolved in a light microscope measures ____ nanometers.      a. 50   b. 100   c. 200   d. 400   e. 1000      10. To see objects smaller than those that can be resolved by a light microscope, we usually use microscopes that employ a beam of      a. electrons   b. photons   c. protons   d. neutrons   e. X-rays  
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   11. The phospholipid molecules of most membranes have      a. a hydrophobic head and a hydrophilic tail   b. a hydrophilic head and a hydrophobic tail   c. a hydrophobic head and two hydrophobic tails   d. a hydrophilic head and two hydrophobic tails   e. none of these      12. Hydrophobic reactions of phospholipids may produce clusters of their fatty acid tails, which form      a. a lipid bilayer   b. hydrolysis of the fatty acids   c. a protein membrane   d. a cytoskeleton   e. a nonpolar membrane      13. The relative impermeability of membranes to water-soluble molecules is a result of the      a. nonpolar nature of water molecules   b. presence of large proteins that extend through both sides of membranes.   c. presence of inorganic salt crystals scattered through some membranes   d. presence of cellulose and chemicals such as cutin, lignin, pectin, and suberin in the membranes   e. presence of phospholipids in the lipid bilayer.      14. Which statement is NOT true?  
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   a. Membranes are often perforated by proteins that extend through both sides of the membrane.   b. Some membranes have proteins with channels or pores that allow for the passage
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Biology_1408_Unit_2_Study_Guide - Biology 1408 Unit 2 Study...

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