AHIMA offers two levels of certification: the entry-level Certified Coding Associate (CCA) and the mastery-level Certified Coding Specialist (CCS). A high school diploma or equivalent is needed for the CCA certificate.
1833: English Botanist Robert Brown discovered the nucleus in plant cells. 1838: Matthias Jakob Schleiden, a German botanist, concluded that all plant tissues are composed of cells and that an embryonic plant arose from a single cell. He declared that the cell is the basic building block of all plant matter. This statement of Schleiden was the first generalizations concerning cells.
Quick Answer. A plant cell is the structural and functional unit of a plant. Plant cells generally form several different colonies in order to become a higher functioning organism.