Navigation Links
Nucleolus


In biology, the nucleolus is, strictly speaking, a "suborganelle" of the cell nucleus, which is an organelle. It is a consequence of ribosomal RNA (rRNA) synthesis: nucleolar organizers , special regions on some chromosomes that contain multiple copies of the genes encoding for rRNA (which is involved in protein biosynthesis), gather themselves in the same region where they transcribe the rRNA genes. Thus it can be said the nucleolus consists basically of nucleolar organizers and the transcribed rRNA (plus associated proteins). Following synthesis, rRNA molecules are attached to proteins, forming ribosomal subunits, which leave for the cytosol through nuclear pores.

Function: it creates ribosomes.


'"/>


(Date:4/18/2014)... decades, scientists have used techniques like X-ray crystallography and ... into the atomic structure of molecules, but such efforts ... demand large quantities of a specific molecule and often ... making it all but impossible to peer into the ... those problems may soon be a thing of the ...
(Date:4/18/2014)... researchers have published soil organic carbon sequestration rates. ... organic carbon can be sequestered by simply switching from ... there is a growing body of research with evidence ... cover crops, small grains, and forages may not be ... , "Some studies have shown that both moldboard and ...
(Date:4/18/2014)... NC Seeds that sprout as soon as they,re planted ... need to be more careful. In the wild, a plant ... day would risk disaster. More than just an insurance policy ... that seed dormancy has long-term advantages too: Plants whose ... rise to more species, finds in a team of researchers ...
Breaking Biology News(10 mins):MRI, on a molecular scale 2MRI, on a molecular scale 3Researchers question published no-till soil organic carbon sequestration rates 2Researchers question published no-till soil organic carbon sequestration rates 3Researchers question published no-till soil organic carbon sequestration rates 4Plants with dormant seeds give rise to more species 2
... colleagues from the California Institute of Technology, the Curie ... unearthed crystalline magnetic fossils of a previously unknown species ... Paleocene and Eocene epochs, some 55 million years ago. ... Proceedings of the National Academy of Sciences . ...
... the puzzle of how neurons and muscle cells establish ... this piece may be mutated and/or attacked in muscular ... release to direct construction of the nerve-muscle contact or ... internal cell talk so synpases can form and receptors ...
... scientists from North America and Europe will meet at ... first coherent plan for studying and conserving cold-water corals ... foundations for an international research program beginning 2010. ... (TRACES), these world experts will meet to discuss recent ...
Cached Biology News:Earlier global warming produced a whole new form of life 2Mediator in communication between neurons and muscle cells found 2Cold water corals conference to be held in Woods Hole 2Cold water corals conference to be held in Woods Hole 3
Other biology definitionOther Tags