True or False: The outer boundary of life in an extant prokaryotic cell is the capsule.

In prokaryotic cells, the outermost boundary is typically the cell wall, not the capsule. The capsule is an additional layer that surrounds some bacteria and is composed of polysaccharides or proteins, providing protection and sometimes helping with adhesion to surfaces. While the capsule can be an important feature for certain bacteria, especially in pathogenic strains, it is not the defining outer boundary for all prokaryotic cells. Therefore, stating that the capsule is the outer boundary of life in any prokaryotic cell would be misleading, as many prokaryotic cells do not have a capsule at all, and for those that do, the cell wall is still present as a primary structure beneath the capsule.