The basic structure of most animal and plants cells is shown below. All cells are produced from other cells by the process of cell division. Cell division occurs when one cell divides to produce ...

What have we learned about RNA structure ... and prokaryotic genomes contain multiple copies of these rRNA genes to be able to manufacture the large number of ribosomes required by a cell.

In fact, the mere presence of a nucleus is considered one of the defining features of a eukaryotic cell. This structure is so ... In contrast, the DNA of prokaryotic cells is distributed loosely ...

Eukaryotes are thought to have originated through a process known as endosymbiosis, in which an ancestral prokaryotic cell engulfed another ... In plant and fungal cells, vacuoles help maintain cell ...

This is called photosynthesis. The basic structure of a plant cell is shown below. Photosynthesis relies on many structures in the cell all working together, each playing its role. The diagram ...