in biology, the unit of structure and function of which all plants and animals are composed. The cell is the smallest unit in the living organism that is capable of integrating the essential life processes.he size of the nucleolus is a function chiefly of the cellâs ribosome requirement; the nucleolus is, therefore, especially large in a cell that intensively synthesizes proteins. Protein synthesis, the end result of chromosome function, occurs mainly in the cytoplasm.
In physical oceanography, the significant wave height (SWH or H s) is defined traditionally as the mean wave height (trough to crest) of the highest third of the waves (H 1/3).
Significant wave height, scientifically represented as H s or H sig, is an important parameter for the statistical distribution of ocean waves. The most common waves are less in height than H s. This implies that encountering the significant wave is not too frequent.he significant wave height may thus refer to H m0 or H 1/3; the difference in magnitude between the two definitions is only a few percent.