The use of "suicide" genes in genetically modified organisms is designed to
A) prevent the growth of the modified organisms in the environment.
B) kill the modified organisms before they are released in the environment.
C) delete genes necessary for modified organism's growth.
D) provide for resistance of the modified organisms to pesticides.
E) provide a means to eliminate non-modified organisms.
A
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Which type of molecule organizes transmembrane proteins into lipid rafts?
a. phospholipid b. glycolipid c. cholesterol d. glycoprotein
Microfilaments function in
A) muscle contraction. B) cytoplasmic streaming. C) cell division. D) maintenance of animal cell shape. E) All of the above.
Ocean currents ____ in the Northern Hemisphere and ____ in the Southern Hemisphere.
A. circulate counterclockwise; circulate clockwise B. move west to east; move east to west C. move east to west; move west to east D. circulate clockwise; circulate counterclockwise E. undulate along a line northeast and southwest; undulate along a line southeast to northwest
Which of the following is correct about viruses?
A. Viruses can be grown on nutrient agar. B. Viruses are prokaryotic. C. Viruses contain 70S ribosomes. D. Most viruses cannot be seen with a light microscope. E. Viruses undergo binary fission.