Which term refers to the regulatory events that establish a specific pattern of gene activity and developmental fate for a given cell?
A) determination
B) attenuation
C) gradient regulated
D) lysogen
E) differentiation
Answer: A
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If you were to design a long-term research study to determine why there are no human births in Lapland during the months of August, September, and October, you would need to also examine a comparison population of humans in which births took place every month. The primary reason for including a comparison population within the design of this experiment would be to:
A. accumulate more facts that could be reported to other scientists. B. test the effects of more than one variable at the same time. C. prove that there are no births in Lapland during August, September, and October. D. act as a control that would ensure that the results obtained are due to a difference in only one variable.
A student prepares lysate A from cells with high levels of cAMP and lysate B from cells with very low levels of cAMP. If these lysates were subjected to DNase, it could be predicted that cAMP receptor protein binding sites would be:
A. not present in either lysate. B. protected in lysate A. C. protected in lysate B. D. equally protected in both lysates. E. not occupied in either lysate.
An artificial pacemaker supplements the actions of
a. sympathetic nerves. b. the atrioventricular node. c. the medulla oblongata. d. the sinoatrial node. e. the heart muscle itself.
Whole genome or shotgun sequencing requires
A) the creation of a cDNA library. B) the creation of overlapping DNA fragments whose sequences can be aligned into large contiguous fragments (contigs) using computer algorithms. C) large contiguous fragments (contigs) cloned into yeast artificial chromosomes (YACs) in an ordered fashion. D) very large amounts of DNA from the organism whose genome is being sequenced. E) the use of a gene gun to propel DNA-coated particles at high velocities into cells.