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Teacher's Guide - return to teacher's guide home hand using a
mouse  PDF Files for PrintingLesson 3-Dose-Response
Relationships  At a Glance   Students complete their
observations of the germinating seeds on the third consecutive
day. They express their data on a graph and develop a dose-
response curve for their chemical. Students then compare the
data from their investigation of a chemical with those of other
teams and other chemicals. Students learn to analyze dose-
response curves to determine threshold and potency.  Major
Concepts  Dose and response are related and can be represented
by a dose-response curve. Data from toxicology testing can be
represented by a dose-response curve, from which scientists can
describe the threshold and potency of chemicals.   After
completing this lesson, students will  Background Information
Dose-Response Curves  The characteristics of exposure to a chemi