Question 1

If GM crops can decrease pesticide use, why are environmentalists still concerned about them?

Accepted Answer

A)  The FDA does not regulate them. 
B)  Inserted genes can spread to nontarget species. 
C)  The government funds most GM crop research. 
D)  There is no public opposition to GM crops. 
E)  Trials involving biotech fruits and vegetables have increased dramatically in recent years.

Question 2

Seed banks are important for _ . _ since 1950.

Accepted Answer

A)  agricultural investments in developing countries 
B)  protecting monoculture productivity 
C)  protecting genetic diversity 
D)  providing farmers with the current year's GM crops 
E)  loans to developing countries to promote organic agriculture

Question 3

-Based on the information in the figure, you might decide to make changes in your diet to diminish your ecological footprint by .

Accepted Answer

A)  eliminating all protein from your diet 
B)  shifting to beef exclusively because of the large amount of meat from a single cow 
C)  shifting your protein intake to young cows and pigs to reduce resource consumption 
D)  shifting your protein intake from beef and pork to eggs and dairy products 
E)  shifting your protein intake from eggs and dairy products to beef and pork

Question 4

Your friend plants Roundup Ready seeds in her garden and several months later notices that her garden is overrun with weeds. She calls the seed company to complain. How should the customer service agent respond?

Accepted Answer

A)  The customer service agent should apologize, because the seeds were already treated with Roundup, which should have controlled the weeds. 
B)  The customer service agent should point out that the kind of weeds in her garden must already be resistant to the effects of the Roundup that was in the seeds. 
C)  The customer service agent should put your friend on hold indefinitely. 
D)  The customer service agent should point out that the Roundup Ready plants would survive being sprayed with Roundup. Your friend never used Roundup on her garden, so the weeds overran her garden. 
E)  The customer service agent should point out that Roundup Ready crops are no longer legal and should advise your friend that any crops she is growing need to be destroyed and not eaten because they are contaminated.

Question 5

All of the following factors are thought to contribute to colony collapse disorder EXCEPT .

Accepted Answer

A)  parasites and pathogens 
B)  loss of habitat such as prairie 
C)  abnormally harsh winters 
D)  the use of insecticides 
E)  the use of Roundup to kill weeds

Question 6

Cows require a high quantity of feed because they .

Accepted Answer

A)  are the best source of high -quality protein 
B)  can feed more people than pigs 
C)  are raised on feedlots 
D)  take time to grow and have a low energy conversion efficiency 
E)  are genetically modified organisms

Question 7

Why have most bioengineered crops been modified for "resistance" traits?

Accepted Answer

A)  These are the only traits proven safe for the human health. 
B)  These are the only traits proven safe for the environment. 
C)  Crops with these traits taste better. 
D)  These traits have the economic potential to save on production costs. 
E)  No technology exists to engineer other traits successfully.

Exam 10: Environmental Health and Toxicology