Toxicology Homework 6
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toxicology6_test.docxThese answers are found in Chapters 9 and 10\
Question 1
1.
Which air pollutant binds actively to hemoglobin, reducing the ability of blood to supply oxygen to the tissues?
Answer
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hydrogen sulfide |
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nitrogen dioxide |
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carbon monoxide |
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carbon dioxide |
4 points
Question 2
1.
Ozone arises from a cyclic reaction between oxygen and _______.
Answer
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sulphur dioxide |
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carbon dioxide |
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hydrogen sulphide |
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nitrogen dioxide |
4 points
Question 3
1.
Fertilizers, sewage and organic waste products in waste water may lead to abundant growth of _______.
Answer
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aquatic plants |
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succulents |
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tropical plants |
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desert plants |
4 points
Question 4
1.
Methylmercury has a long half-life in the body, approximately ______days.
Answer
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150 |
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200 |
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70 |
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20 |
4 points
Question 5
1.
Poisoning may occur through the intentional eating of fungi believed to contain ____.
Answer
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psychoactive substances |
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combustible substances |
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pennyroyal oil |
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castor oil |
4 points
Question 6
1.
Throat cancer in the Japanese may be due to the ingestion of ________.
Answer
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pennyroyal |
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mushrooms |
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bracken |
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puffer fish |
4 points
Question 7
1.
Which element causes a peripheral vascular disorder known as black-foot disease?
Answer
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iron |
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sulfur |
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zinc |
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arsenic |
4 points
Question 8
1.
Which toxic substance found in snake venom sometimes causes intravascular hemolysis by direct action on the red blood cell membrane?
Answer
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saxitoxin |
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inorganic sulfur |
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sulfur oxides |
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phospholipases |
4 points
Question 9
1.
What is that animal toxin that is found in the puffer fish?
Answer
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cantharidin |
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formic acid |
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amino acid |
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tetrodotoxin |
4 points
Question 10
1.
Magnesium lost from soil due to acidification is believed to be an important factor in the __________.
Answer
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die back of trees |
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powdery mildew of trees |
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root-rot of trees |
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leaf injury of trees |
4 points
Question 11
1.
Assume the responsibility of the director of Environmental Protection Agency (EPA). List the most important actions for dealing with the problems of (a) air pollution and (b) water pollution. What other actions might you recommend to take other than the ones listed in the textbook? Justify your position.
Answer
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20 points
Question 12
1.
Discuss the role of ALAD in lead toxicology.
Answer
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20 points
Question 13
1.
What symptoms exist between the effects of exposure to mercury and arsenic? How could you distinguish the difference?
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