Word: nucleus
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...have outlined their construction manual for DNA (deoxribonucleic acid), the carrier of genetic information for all cells, many scientists agree that the best target for further research is RNA (ribonucleic acid). The cell copies specific genetic instructions from the DNA into RNA and then transports the RNA from the nucleus to the cytolpasm. It has not yet been determined how the cell chooses which information to copy and how the RNA is transmitted...
...Cell Theory, formulated in 1839, states that all living matter is composed of cells, which are made up of nuclei and cytoplasm. In the last two decades scientists have found that DNA, a long double--chained molecule found in the nucleus, carries the cell's genetic information. This information is the blueprint that describes how the working parts of the cell, the proteins, should be assembled from 20 building blocks, the amino acids. Thus DNA ultimately determines the cell's function. The DNA's information is transferred to RNA (the cell's working manual), which is chemically like DNA except...
Kafatos points out that even if the nucleus of a fertilized egg is removed, the egg can still give rise to a very young embyro. This demonstrates that stable messenger RNA for making an embryo had been stored in the egg's cytoplasm. Storage may well be the level where the critical choice might reside in the cells of higher organisms. This is not the case for very simple cells like bacteria, where the genetic information is transcribed into RNA and immediately translated into protein. Kafatos explained that, due to the great instability of the bacterial world, bacteria...
...weeks, a Japanese poster drawing of a couple frolicking in sexual intercourse had been visible over much of southern Sweden, including the town of Lund. It heralded an 800-work display in Lund's museum entitled "First International Exhibition of Erotic Art." The nucleus of the show was drawn from the collection of Paris-based U.S. Sexologists Phyllis and Eberhard Kronhausen, who maintain that their interest in erotica is "part of our concern with mental health. We feel very strongly that sexuality is the great remaining pocket of cultural insanity...
Support for the proposed strike expanded yesterday to include groups from all political positions. At a meeting late Wednesday night, more than 1300 students voted to form a new Strike Steering Committee keeping the old 11-man steering committee as a nucleus...