GMOs GMOs, or Genetically Modified Organisms, Are Organisms Whose Genes Have

question 153

Multiple Choice

GMOs
GMOs, or genetically modified organisms, are organisms whose genes have been altered in laboratories. Scientists modify the genetic codes of plants or animals by inserting copies of desirable genes into the organism's DNA. While modifying organisms in a laboratory is a relatively new scientific development, people have been experimenting with genetics on plants and animals for centuries. For example, cattle ranchers have selectively bred their animals to produce cows that give more milk.
Although some people fear the "Frankenstein" nature of GMOs, there is no scientific evidence to suggest that GMO-based foods are harmful for human consumption. In fact, there are several reasons to believe that GMOs actually quite beneficial.
Through genetic modification, scientists can breed species of plants or animals that yield hardier, more abundant, or even more nutritious food. Geneticists have been able to produce rice plants that can survive droughts and wheat plants that are naturally pest-resistant. Some genetically modified foods have been engineered to have higher levels of specific nutrients, such as protein or calcium. Proponents of GMOs argue that these kinds of advances might one day help to end world hunger. Furthermore, genetically modified crops and animals can be bred to require fewer natural resources and produce less waste. This means that GMOs might also be better for the environment.
Question: Which of the following is true according to information found in the passage?

• A)Genetically modified cattle have been shown to live longer than non-GMO cattle.
• B)Scientists have transferred some genetic material from animals into the genetic code of plants.
• C)Some studies have shown that GMO-based foods might be hazardous to the health and well-being of humans.
• D)People have been modifying the genetic makeup of organisms for hundreds of years.

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Definitions:

Substage

In microscopy, a component part of the microscope's stage that allows for adjustments, such as altering the intensity of light, to enhance the visualization of specimens.

Shutter or Diaphragm

Mechanical device in a camera that controls the duration and amount of light that reaches the film or sensor, crucial for exposure.

Ocular Lens

A lens located in the eye that focuses light rays onto the retina, enabling vision.

Stage

Has two clips that hold the specimen slide to be viewed.