Scientists have developed bioengineered crops that are more resistant to damage by frost, chemicals, and drought. Crops have been bioengineered also to produce larger crop yields. What is a potential drawback to increased use of bioengineered crops?
A) a loss of genetic variation
B) increased disease resistance
C) lower food costs
D) decreased food supply
Ans: A) a loss of genetic variation
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People often talk about each of our “carbon footprints.” What do you think that means?
a. how much carbon dioxide we exhale b. how much carbon dioxide we inhale c. how much carbon dioxide is generated from photosynthesis d. how much carbon dioxide is generated from the burning of fossil fuels to sustain one’s lifestyle
In garden peas, smooth seeds are dominant to wrinkled ones, and yellow pea color is dominant to green. In a dihybrid cross of SsYy x SsYy, what proportion of the offspring from this cross is expected to be both smooth and yellow?
1.9/16
2.3/16
3.1/16
4.none
Which joints are likely to be affected by
osteoarthritis? a. fingers b. knees c. hips d. backbone e. all of these
Select the best response to the question. ? ?Which of the following demonstrates an understanding of gas sterilization?
A) The indicator tape turns a different color to verify the instruments are sterile. B) Sterilized instruments can be used within a few hours of processing. C) The instruments are rinsed with water and sterilized while still wet. D) Sterilized instruments are stored in a well-ventilated area for at least 24 hours.