The cell.

Posted: February 12, 2013 in Cells

For all those that did science growing up, knows what a cell is. A cell is the basic unit that can carry out living functions. These living functions are :
1) A high degree of chemical complexity and microscopic organisation.
2) Systems for extracting , transforming and using energy from the environment.
3) A capacity for precise self-replication and self assembly. ( precise because all cells divide through mitosis, with the exception of sex cells).
4) Mechanisms for sensing and responding to alterations in their environment.
5) Defined functions for each of their components and regulated interactions among them.
6) A history of evolutionary change.

All cells share certain features. Some of which are: the plasma membrane, cytoplasm, ribosomes, nucleus or a nucleoid.

One of the most interesting things for me, was coming across the term cytosol. The cytosol is actually the aqueous liquid within the cell that contains enzymes ,ribosomes, coenzynes, and the RNA that encode them. So for example,say you had a cross section diagram of the cell with three layers, plasma membrane , cytoplasm, and the nucleus in the middle, the cytosol would be found in the cytoplasm region surround the nucleus. Well this is how I pictured it.

Until next time! (:

  1. Dylon Bachan says:

    Very professional

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