PASSIVITY:
DAM : DELUGE ::
Human cells are programmed to selfdestruct at the same rate at which they are generated. However, the programs can malfunction, resulting either in excessive cell growth, which can lead to cancer, or excessive cell destruction, which can lead to degenerative diseases. As for the latter, using a tool called RNA interference, researchers can turn off the functions of genes individually and, by observing the results, determine which genes influence the process of cell death.Geneticists have isolated more than one hundred different human genes that prevent cells from self-destructing. However, these genes operate interdependently toward this end; moreover, most such genes serve other functions as well, including cell differentiation and proliferation. Scientists are just beginning to identify the gene groups that play key roles in the prevention of cell death and to understand the intricacies of how these groups function, not just as units but also together, in what appears to be a vast network. Building on this knowledge, researchers hope to learn how to precisely manipulate the process of cell death in humans a crucial step toward the development of diagnostics and treatments that target the specific diseases associated with out-of-control cell destruction.It can be inferred from the passage that the author mentions "cell differentiation and proliferation" (lines 21–22) probably in order to
The _______ that computers are _______ educational tools has led many parents to believe that children dont need to be monitored when using the computer, as they do when watching television.
PROXIMAL:
SCALE : TONE :
