A heterotrophic, unicellular, eukaryotic cell is
A. Alga.
B. Bacterium.
C. Archeon.
D. Protozoan.
D. Protozoan.
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‘Flavr Savr' tomatoes have been genetically engineered so that they underproduce an enzyme involved in ripening. They can later be artificially ripened by:
a. auxin b. ethylene c. auxin d. cytokinin e. gibberellin
What was the original purpose of the voyage of the HMS Beagle?
A) to add to the general knowledge of the animals and plants on Earth B) to gather physical evidence in support of the theory of evolution C) to chart the coast and harbors of South America D) to do experiments to test Lamarck's view of inheritance of acquired characteristics
Your research project involves characterizing the expression pattern of a nuclear pore protein. After using immunohistochemistry to fluorescently label the protein, you decide that you would like to capture the data as a 3-D image. Which microscope should you use?
A. phase-contrast microscope B. confocal microscope C. scanning electron microscope D. fluorescence microscope
Which of the following scientists argued that variation among individuals allows evolution to occur?
A) Aristotle B) Lamarck C) Linnaeus D) Wallace