Eukaryotic evolution, changes and challenges

Endosymbiosis and Eukaryotic Cell Evolution

Understanding the evolution of eukaryotic cellular complexity is one of the grand challenges of modern biology. It has now been firmly established that mitochondria and plastids, the classical membrane-bound organelles of eukaryotic cells, evolved from bacteria by endosymbiosis. In the case of mitochondria, evidence points very clearly to an endosymbiont of α-proteobacterial ancestry. The preci...

The Eukaryotic Ribosome: Current Status and Challenges*

Despite having been identified first, their greater degree of complexity has resulted in our understanding of eukaryotic ribosomes lagging behind that of their bacterial and archaeal counterparts. A much more complicated biogenesis program results in ribosomes that are structurally, biochemically, and functionally more complex. However, recent advances in molecular genetics and structural biolo...

Ontology Evolution and Challenges

Information semantics and semantic interoperability among applications, systems, and services are mostly based on ontology. Its increase usage in Information Systems and Knowledge Sharing Systems raises the importance of ontology maintenance. Ontology change management incorporates areas like ontology engineering, evolution versioning, merging, integration, and maintenance. Changes are made to ...

Ergoecology: evolution and challenges.

This work details the conceptual and methodological evolution of 'Ergoecology' and its relationship to certain comparable disciplinary proposals and standards, with a view to making its current status known and fostering discussion and development of it in a broader context. 'Ergoecology' is a discipline which relates the ergonomic system to 'environmental factors', stressing the relationships ...

Challenges and changes.