Which of the following is not a function of a plant stem?
A. storage of starch
B. storage of water
C. production of pollen
D. support
E. protection from predators
C. production of pollen
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Alcohol is a waste product produced by yeast in the presence of sugar and the absence of ________.
A. ATP B. H2O C. CO2 D. O2
Which of the following processes is central to the initiation of transcription?
A) binding of sigma to the promoter region B) formation of a phosphodiester bond in the elongating RNA strand C) binding of DNA polymerase to the promoter region D) formation of a DNA primer
An oil spill occurs, and Greg (a member of the clean up team) suggests adding fertilizer. Why is he making this suggestion?
A. The fertilizer encourages the growth of microbes that can break down the oil. B. The chemicals in the fertilizer digest the oil residues. C. The fertilizer interacts with the oil droplets and renders them harmless. D. The fertilizer volitizes the oil.
You treat a sample of DNA with DNase and run the digested fragments out on an electrophoretic gel. You found mostly long fragments. What can you conclude about this sample of DNA?
A) The sample contains mostly euchromatin. B) The sample contains relatively few histone proteins. C) The sample contains mostly heterochromatin. D) The DNA is from yeast cells. E) The sample likely represents actively transcribed genes.