Prescriptive Test — Unit test Answers

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1
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Scientists have genetically engineered potato plants to produce potatoes that contain edible vaccines. Which is a disadvantage of the genetically engineered potatoes?

A
They are easier to transport and store than injectable vaccines (shots).
B
They make it easier to administer edible vaccines.
C
They are more expensive than potatoes without the vaccine.
D
They have nutritional value while potatoes without the vaccine do not.
2
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Which is a potential negative consequence of using genetically engineered medicine?

A
Gene markers that are resistant to antibiotics are used, providing the possibility for humans to have increased antibiotic resistance.
B
Products that are used to genetically engineer medicine are poisonous.
C
Restriction enzymes are used to create the medicine and have been known to cause cancer.
D
Medicine that is created this way is less effective than medicine that is created the traditional way.
3

The use of DDT as a pesticide is an example of how new technology can have favorable and dangerous long-term outcomes. How does this relate to the use of DNA technology?

A
Only positive outcomes can result from new technology in science.
B
Scientists should conduct long-term studies of DNA technology to determine the consequences.
C
There is no connection because they are different technologies.
D
Scientists should not use new technology; they should use the methods for pest control that are already available.
4

Why are scientists concerned about the use of the Bt toxin, which is used to kill insects, in genetic engineering?

A
The Bt toxin is killing too many insects.
B
The Bt toxin stays in the soil for long periods of time.
C
The Bt toxin gene is not readily accepted by plants.
D
The Bt toxin has been known to cause disease in plants.
6

Which is a negative consequence of using DNA technology in forensics?

A
connecting parents to children through paternity testing
B
convicting guilty people of crimes based on DNA results
C
having a backlog of untested DNA samples
D
matching relatives to a missing person’s DNA
7

Which is a synonym for genetic engineering?

A
DNA fingerprinting
B
recombinant DNA technology
C
biotechnology
D
restriction enzyme technology
8

Considering that nearly 85 percent of corn crops are genetically engineered, which impact does genetically engineered corn have on human health?

A
Only positives can come from this type of technology, as seen in the DDT study.
B
Human health will not be affected because scientists have studied this technology for over 50 years.
C
The genetically engineered corn has been proven to cause cancer in some human populations.
D
The long-term effects are unknown and have not been studied because it is a fairly new technology.
9

Which is a disadvantage of using genetic engineering?

A
reduced effectiveness of pesticides
B
more pharmaceuticals
C
edible vaccines
D
drought and salinity tolerance
10

Which is an advantage of using DNA technology?

A
phytoremediation
B
gene transfer to nontarget species
C
unknown effects
D
reduced effectiveness of pesticides
13

Which is a disadvantage of using DNA technology?

A
edible vaccines
B
phytoremediation
C
herbicide tolerance
D
gene transfer to nontarget species
16

Which best describes the advantage of pest resistance?

A
Pests can tolerate more pesticides.
B
Pesticides become less effective.
C
Farmers do not have to use harsh chemicals to save their crops.
D
Farmers can kills weeds without killing their cash crop.
20

Why might genetically engineering a crop to be herbicide resistant result in producing weeds that are herbicide resistant?

A
The DNA in herbicide resistant crops does not affect insects.
B
The weeds that are not affected by the herbicide are able to reproduce.
C
Insects that are not affected by the herbicide can pollinate new species of weeds.
D
The weeds will become tolerant to the herbicide through repeated exposure.

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