Which environmental factor has a direct effect on an organism's rate of water loss by evaporation?
A) insect biodiversity
B) wind
C) plant pollination rates
D) algae abundance
Answer: B
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What would be the most reasonable technique to use to determine if a drug is capable of inhibiting a transcription factor?
A. ChIP assay used with a DNA microarray B. Mass spectometry of proteins in the cell C. 2-D gel electrophoresis D. Antibody microarray
A variety of E. coli clones have been isolated, and the DNA has been extracted, digested with restriction enzymes, denatured, separated by gel electrophoresis, and transferred to nylon membrane by the Southern blot procedure. A radioactive probe is used that hybridizes with a gene of interest. The DNA corresponding to a single clone yields a single DNA band after probing the blot. Based on this
information only, A) all of the clones tested, except the one described, have the gene of interest. B) only the one clone described has the gene of interest. C) the gene of interest is located entirely on the DNA band visualized. D) the part of the gene recognized by the probe is located on the DNA band visualized. E) both choices B and D
Which does not refer to the shape of a virus?
A. Icosahedral (isometric) B. Helical C. Complex D. Bacillus
Explain this statement: "There is bias in the fossil record." What will be an ideal response?