Environmental science

Question 1

1.

Which air pollutant binds actively to hemoglobin, reducing the ability of blood to supply oxygen to the tissues?

Answer

hydrogen sulfide
nitrogen dioxide
carbon monoxide
carbon dioxide

4 points   

Question 2

1.

Ozone arises from a cyclic reaction between oxygen and _______.

Answer

sulphur dioxide
carbon dioxide
hydrogen sulphide
nitrogen dioxide

4 points   

Question 3

1.

Fertilizers, sewage and organic waste products in waste water may lead to abundant growth of _______.

Answer

aquatic plants
succulents
tropical plants
desert plants

4 points   

Question 4

1.

Methylmercury has a long half-life in the body, approximately ______days.

Answer

150
200
70
20

4 points   

Question 5

1.

Poisoning may occur through the intentional eating of fungi believed to contain ____.

Answer

psychoactive substances
combustible substances
pennyroyal oil
castor oil

4 points   

Question 6

1.

Throat cancer in the Japanese may be due to the ingestion of ________.

Answer

pennyroyal
mushrooms
bracken
puffer fish

4 points   

Question 7

1.

Which element causes a peripheral vascular disorder known as black-foot disease?

Answer

iron
sulfur
zinc
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

saxitoxin
inorganic sulfur
sulfur oxides
phospholipases

4 points   

Question 9

1.

What is that animal toxin that is found in the puffer fish?

Answer

cantharidin
formic acid
amino acid
tetrodotoxin

4 points   

Question 10

1.

Magnesium lost from soil due to acidification is believed to be an important factor in the __________.

Answer

die back of trees
powdery mildew of trees
root-rot of trees
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

20 points   

Question 12

1.

Discuss the role of ALAD in lead toxicology.

Answer

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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