etx103 2007 exam

etx103 2007 exam - Name: February 23, 2007 ETX 103A Exam II...

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N a m e : February 23, 2007 ETX 103A Exam II Short concise answers recommended 100 points total 1. Developmental toxicants can produce low birth weight and/or organ system aberrations. Please offer a plausible explanation for the following phenomena. (6 pts each) a. Cadmium produces developmental toxicity despite vanishingly small direct exposure of the embryo or fetus. b. DES produces malformation of the lower genital tract in female offspring during the critical period with only marginal if any effects on rate of cell growth. c. Alcohol likely affects development of the nervous system without being metabolized to acetaldehyde. (A similar explanation can be given for some other drugs of abuse.) 2. Suppose a woman (15,000 cm 2 surface area) went swimming in a lake contaminated by an organic solvent (Agent X, 3 μg/ml) and absorbed 18 mg of X (flux = 0.2 cm/hour) through her skin. How many hours did she spend swimming in the lake? (12 pts) 3. A shampoo was advertised that contained coal tar to reduce weathering (split ends) in hair. Give 3
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This note was uploaded on 01/06/2011 for the course ETX 103A taught by Professor Etx during the Spring '06 term at UC Davis.

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etx103 2007 exam - Name: February 23, 2007 ETX 103A Exam II...

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