Food Labels: Test Your GMO Knowledge

Food Labels: Test Your GMO Knowledge
Image: ©iStockphoto.com/chemicalbilly

About This Quiz

Genetically modified foods are a touchy topic. Cloned cows or pigs haven't been approved for public consumption, obviously, but pest-resistant corn can cause its fair share of controversy. How much do you know about genetically modified foods?
When were the first genetically modified foods available in the United States?
1970s
1980s
1990s
The GMO movement kicked off in the '90s with an engineered vegetable called the Flavr Savr.

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What was the first genetically modified food to be sold commercially?
corn
tomato
The Flavr Savr was a rot-resistant tomato. First sold in 1994, it wasn't profitable and was on the market for only a few years.
potato

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What is triple-stack corn?
corn that has three times the kernels of regular corn
corn that has been genetically modified to have extra vitamin C
corn that has built-in insect and weed control
Triple-stack corn has been genetically implanted with weed and insect control. It's one of the best-selling corn seeds in the United States.

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What nutrient is golden rice packed with?
vitamin A
Golden rice, which was introduced in 2000, is fortified with vitamin A. In 2005, another version came out with extra beta carotene. Neither of these products has hit the market yet, though.
vitamin B
vitamin C

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Researchers have produced genetically engineered pigs whose meat has elevated levels of what?
omega-3 fatty acids
The transgenic pigs that produce omega-3 fatty acids have not yet been approved for human consumption.
protein
antioxidants

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What is the most commonly genetically modified crop in the United States?
soybeans
Soybeans, which are modified to be resistant to herbicides, are the most commonly modified crop in the U.S.
corn
apples

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According to the USDA, what percentage of the soybeans grown in the United States are genetically modified?
74 percent
89 percent
In 2006, 89 percent of American soybeans were genetically modified, the highest percentage of any crop.
98 percent

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About how many genetically engineered food crops have been approved by the USDA?
15
25
40
The USDA has approved more than 40 transgenic crops for sale in the United States.

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What's one way that cheese can be genetically engineered?
It can be made "vegetarian."
Chymosin, the main enzyme in rennet, is usually extracted from animals. But now it can be genetically engineered, so the cheese is technically vegetarian.
It can be mold-resistant.
It can have 20 percent extra protein.

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In 2008, a large group of investors led a protest against what genetically engineered crop?
sugar beets
The Interfaith Center on Corporate Responsibility initiated a campaign against genetically modified sugar beets, which would produce the sugar in thousands of popular foods. In September 2009, a federal court ruled against the sugar beets.
lettuce
broccoli

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You Got:
/10
©iStockphoto.com/chemicalbilly

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