Chemistry 100                                                                                     Dunnivant

Exam 4                                                                                                Spring, 2004

 

Name (printed)  _____________________

 

Closed notes, closed book, closed Internet, closed neighbor!

 

I have neither given nor received aid on this exam.  __________________________

                                                                                                Signature

 

There are 100 points on this exam.

 

 

 

 

 

 

 

 

 

Risk (as a fraction) = Chronic Daily Intake (CDI)   *   Slope Factor

 

 

 

 

 

 

 

 

 

 


  1. (10 pts) Explain what an LD-50 is and how it is measured.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10 pts)  Explain (in detail) one of the four ways a neurotoxin works in the body.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10 pts)  Define tetratogen, mutagen, and carcinogen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10pts)  Heptachlor, a chlorinated pesticide from the 1970s, has been found in a drinking water supply at a concentration of 0.01 mg/L.  If a persons drinks 2L/day and weights 70 kg this yields a CDI of 0.000286 mg/kg-day.  The slope factor for this chemical is 4.5 (mg/kg-day-1).  What is the cancer risk per million people?  Is this significant?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10 pts) Using graphs and words contrast the difference between a chemical that causes cancer and one that is a health risk (but not carcinogenic).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10 pts)  Draw a sanitary landfill and label all of the components.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10 pts)  Contrast RCRA and CERCLA (Superfund).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10 pts) Draw a hazardous waste landfill and label all of the components.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10 pts)  Explain what is meant by a Band-aid approach to environmental management or pollution.  Give at least one example.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. (10 pts)  What was the most important thing you learned in this course.  Really, think about this seriously and give me some feedback.