Each of the following provides evidence in support of the primary role of RNA in the evolution of life EXCEPT:
A. Some RNA molecules are catalytic.
B. ATP (energy currency of the cell) is a ribonucleotide.
C. RNA can regulate gene expression.
D. RNA is less chemically stable than DNA.
E. RNA catalyzes peptide bond formation during protein synthesis.
Answer: D
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Which of the following is mismatched?
a. cytokinin; inhibits lateral root formation b. auxin; promotes cell elongation c. gibberellin; involved in phototropism and gravitropism d. abscisic acid; promotes stomatal closure e. ethylene; promotes leaf abscission
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.
All of the following are diameters of cells that would be resolved in a microscope with a limit of resolution of 0.2 µm except
A. 0.3 µm. B. 0.2 mm. C. 0.2 µm. D. 2.0 µm. E. 0.1 µm.
The most effective means of preventing influenza is
A) annual vaccination. B) isolation of carriers. C) vector control. D) pasteurization of milk. E) administration of amantadine.