Mader's Concepts in Biology, First Edition Copyright  ©  The McGraw-Hill Companies, InC) Permission required for reproduct...
Question 1 <ul><li>What percentage of our planet is covered by water? </li></ul><ul><li>A. 95 </li></ul><ul><li>B. 85 </li...
Question 2 <ul><li>Which of the following is not a use of water by living organisms? </li></ul><ul><li>A. external transpo...
Question 3 <ul><li>Anything that takes up space and has mass is referred to as an element. </li></ul><ul><li>A. true </li>...
Question 4 <ul><li>A substance which cannot be broken down by chemical means into simpler substances with different proper...
Question 5 <ul><li>If a specific element is to remain that particular element, which of the following situations could not...
Question 6 <ul><li>Which of the following elements is not predominately found in living organisms? </li></ul><ul><li>A. ca...
Question 7 <ul><li>A solid substance which is formed by natural processes is best described by which of the following term...
Question 8 <ul><li>Which of the following terms is the most inclusive? </li></ul><ul><li>A. atom </li></ul><ul><li>B. elem...
Question 9 <ul><li>Neutrons have a negative charge. </li></ul><ul><li>A. true </li></ul><ul><li>B. false </li></ul>
Question 10 <ul><li>Positively charged, found in the nucleus, and has mass. These statements apply to which of the followi...
Question 11 <ul><li>Which of the following best describes the structure of an atom? </li></ul><ul><li>A. positive protons ...
Question 12 <ul><li>The number of protons found in an atom is also known as: </li></ul><ul><li>A. the atomic mass </li></u...
Question 13 <ul><li>In the orbital shells of electrons, the outer shell has a higher energy level than the inner shell and...
Question 14 <ul><li>Under most circumstances, which of the following has the greatest number for an atom? </li></ul><ul><l...
Question 15 <ul><li>A chemist is studying the atomic mass of an element. Which of the following would he or she be most in...
Question 16 <ul><li>When an element has a variable number of neutrons it is referred to as an isotope. </li></ul><ul><li>A...
Question 17 <ul><li>When an element becomes an isotope, which of the following features changes? </li></ul><ul><li>A. the ...
Question 18 <ul><li>Radioactive isotopes can be used as tracers to detect molecular changes. </li></ul><ul><li>A. true </l...
Question 19 <ul><li>A patient is having heart problems. Which of the following low level radioactive isotopes would be use...
Question 20 <ul><li>Positron-emission tomography is used in which of the following procedures? </li></ul><ul><li>A. to det...
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Chapter 2

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Chapter 2

  1. 1. Mader's Concepts in Biology, First Edition Copyright © The McGraw-Hill Companies, InC) Permission required for reproduction or display. Sylvia S. Mader Chapter 2
  2. 2. Question 1 <ul><li>What percentage of our planet is covered by water? </li></ul><ul><li>A. 95 </li></ul><ul><li>B. 85 </li></ul><ul><li>C. 75 </li></ul><ul><li>D. 65 </li></ul><ul><li>E. 55 </li></ul>
  3. 3. Question 2 <ul><li>Which of the following is not a use of water by living organisms? </li></ul><ul><li>A. external transportation for chemicals </li></ul><ul><li>B. help exchange heat </li></ul><ul><li>C. adds in homeostasis </li></ul><ul><li>D. provides nutrients for metabolism </li></ul><ul><li>E. provides a medium for movement </li></ul>
  4. 4. Question 3 <ul><li>Anything that takes up space and has mass is referred to as an element. </li></ul><ul><li>A. true </li></ul><ul><li>B. false </li></ul>
  5. 5. Question 4 <ul><li>A substance which cannot be broken down by chemical means into simpler substances with different properties is referred to as: </li></ul><ul><li>A. matter </li></ul><ul><li>B. a mineral </li></ul><ul><li>C. a molecule </li></ul><ul><li>D. an isotope </li></ul><ul><li>E. an element </li></ul>
  6. 6. Question 5 <ul><li>If a specific element is to remain that particular element, which of the following situations could not occur? </li></ul><ul><li>A. increase the number of neutrons </li></ul><ul><li>B. increase the number of electrons </li></ul><ul><li>C. increase the number of protons </li></ul><ul><li>D. decrease the number of neutrons </li></ul><ul><li>E. decrease the number of electrons </li></ul>
  7. 7. Question 6 <ul><li>Which of the following elements is not predominately found in living organisms? </li></ul><ul><li>A. carbon </li></ul><ul><li>B. hydrogen </li></ul><ul><li>C. nitrogen </li></ul><ul><li>D. iron </li></ul><ul><li>E. oxygen </li></ul>
  8. 8. Question 7 <ul><li>A solid substance which is formed by natural processes is best described by which of the following terms? </li></ul><ul><li>A. a mineral </li></ul><ul><li>B. an element </li></ul><ul><li>C. matter </li></ul><ul><li>D. an isotope </li></ul><ul><li>E. an ion </li></ul>
  9. 9. Question 8 <ul><li>Which of the following terms is the most inclusive? </li></ul><ul><li>A. atom </li></ul><ul><li>B. element </li></ul><ul><li>C. matter </li></ul><ul><li>D. nucleus </li></ul><ul><li>E. proton </li></ul>
  10. 10. Question 9 <ul><li>Neutrons have a negative charge. </li></ul><ul><li>A. true </li></ul><ul><li>B. false </li></ul>
  11. 11. Question 10 <ul><li>Positively charged, found in the nucleus, and has mass. These statements apply to which of the following terms? </li></ul><ul><li>A. proton </li></ul><ul><li>B. neutron </li></ul><ul><li>C. electron </li></ul><ul><li>D. isotope </li></ul><ul><li>E. atomic mass </li></ul>
  12. 12. Question 11 <ul><li>Which of the following best describes the structure of an atom? </li></ul><ul><li>A. positive protons and negative neutrons in the nucleus surrounded by neutral electrons </li></ul><ul><li>B. negative protons and positive neutrons in the nucleus surrounded by neutral electrons </li></ul><ul><li>C. positive protons and neutral neutrons in the nucleus surrounded by negative electrons </li></ul><ul><li>D. neutral protons and negative neutrons in the nucleus surrounded by positive electrons </li></ul><ul><li>E. positive protons and negative electrons in the nucleus surrounded by neutral neutrons </li></ul>
  13. 13. Question 12 <ul><li>The number of protons found in an atom is also known as: </li></ul><ul><li>A. the atomic mass </li></ul><ul><li>B. the isotope number </li></ul><ul><li>C. the neutron number </li></ul><ul><li>D. the atomic number </li></ul><ul><li>E. the electron number </li></ul>
  14. 14. Question 13 <ul><li>In the orbital shells of electrons, the outer shell has a higher energy level than the inner shell and can hold eight electrons. </li></ul><ul><li>A. true </li></ul><ul><li>B. false </li></ul>
  15. 15. Question 14 <ul><li>Under most circumstances, which of the following has the greatest number for an atom? </li></ul><ul><li>A. atomic number </li></ul><ul><li>B. atomic mass </li></ul><ul><li>C. electron number </li></ul><ul><li>D. neutron number </li></ul><ul><li>E. proton number </li></ul>
  16. 16. Question 15 <ul><li>A chemist is studying the atomic mass of an element. Which of the following would he or she be most interested in studying? </li></ul><ul><li>A. number of protons plus the number of electrons </li></ul><ul><li>B. the number of protons only </li></ul><ul><li>C. the number of electrons only </li></ul><ul><li>D. the number of neutrons plus the number of electrons </li></ul><ul><li>E. the number of protons plus the number of neutrons </li></ul>
  17. 17. Question 16 <ul><li>When an element has a variable number of neutrons it is referred to as an isotope. </li></ul><ul><li>A. true </li></ul><ul><li>B. false </li></ul>
  18. 18. Question 17 <ul><li>When an element becomes an isotope, which of the following features changes? </li></ul><ul><li>A. the atomic number </li></ul><ul><li>B. the proton number </li></ul><ul><li>C. the atomic mass </li></ul><ul><li>D. the valance number </li></ul><ul><li>E. the atomic charge </li></ul>
  19. 19. Question 18 <ul><li>Radioactive isotopes can be used as tracers to detect molecular changes. </li></ul><ul><li>A. true </li></ul><ul><li>B. false </li></ul>
  20. 20. Question 19 <ul><li>A patient is having heart problems. Which of the following low level radioactive isotopes would be used to diagnose the problem? </li></ul><ul><li>A. iodine-131 </li></ul><ul><li>B. carbon-14 </li></ul><ul><li>C. barium-137 </li></ul><ul><li>D. thallium-201 </li></ul><ul><li>E. uranium-238 </li></ul>
  21. 21. Question 20 <ul><li>Positron-emission tomography is used in which of the following procedures? </li></ul><ul><li>A. to determine the activity of tissues </li></ul><ul><li>B. to sterilize medical products to kill pathogens </li></ul><ul><li>C. to sterilize dental products to kill pathogens </li></ul><ul><li>D. to kill cancer cells </li></ul><ul><li>E. to sterilize U.S. mail to kill pathogens </li></ul>

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