single-celled organisms that have a relatively simple structure. Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm.

the mere presence of a nucleus is considered one of the defining features of a eukaryotic cell. This structure is so important because it is the site at which the cell's DNA is housed and the ...

Plant cells also contain large vacuoles and chloroplasts. Each organelle performs a specific function critical to the cell's survival (Table 1). Table 1. The structure and function of key eukaryotic ...