Which microscope is used to observe a specimen that emits light when illuminated with an ultraviolet light?
A) compound light microscope
B) phase-contrast microscope
C) darkfield microscope
D) fluorescence microscope
E) electron microscope
D
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Which of those below is NOT an important consideration when designing a fusion protein construct?
A) Avoid hybridization of the fusion gene in the artificial construct. B) Reading frame is the same for both the fusion gene and reporter gene. C) Transcriptional start and stop signals are shared. D) Translational start and stop signals are shared.
In a forest, trees that get more sunlight grow taller than other nearby trees. This is a form of ______
A. natural selection. B. directional selection. C. artificial selection. D. disruptive selection. E. stabilizing selection.
People who attempted to plant Brazil nuts in hopes of establishing plantations of Brazil nut trees played roles most similar to those of _____
A) agoutis B) orchid bees C) pollen tubes D) harpy eagles
You transform bacteria with a plasmid carrying the ampicillin-resistance gene ampR. How would you determine which bacteria took up the plasmid?
A. Bacteria containing the plasmid would be able to produce ampicillin. B. Bacteria containing the plasmid would be able to grow in the absence of ampicillin. C. Bacteria containing the plasmid would be able to grow in the presence of ampicillin. D. Ampicillin-resistance is necessary for the plasmid DNA to get into the bacteria. E. Bacteria containing the plasmid would be killed in the presence of ampicillin.