Problem 15
Define the terms acute toxicity and dose.
Problem 16
Sketch a typical dose-response curve relationship for a toxic chemical using (a) a linear, and (b) a logarithmic scale for doses.
Problem 18
What are the general structures of the three main subclasses of organophosphate insecticides? Give the name of one insecticide in each subclass. Explain how organophosphates function as insecticides.
Problem 19
In what way are organophosphate insecticides considered superior to organochlorines as pesticides? In what way are they more dangerous?
Problem 20
What is the general structure of carbamate insecticides? Name one example.
Problem 21
What are five of the pest control methods that are used in pest control management?
Problem 22
What is the function of an herbicide? Name a few "old-fashioned" insecticides.
Problem 26
What is phenol? Draw its structure and that of 2,4 -dichlorophenol.
Problem 27
Draw the structures, and write out the names, of the two most important phenoxy herbicides.
Problem 28
What is meant by the precautionary principle?
