Final answer:
The constitutive exocytosis pathway of the Golgi apparatus is indeed an ongoing process in all eukaryotic cells, allowing them to continuously secrete necessary substances.
Step-by-step explanation:
The statement that the constitutive exocytosis pathway of the Golgi apparatus operates continually in all eukaryotic cells is True. Exocytosis is a process where secretory vesicles transport and release their contents outside the cell. This process is ongoing in all cells for substances that need to be secreted continuously.
Cells that are highly active in secretion, such as those in the salivary glands or immune system, have a pronounced number of Golgi apparatuses indicative of their role in processing and packaging substances for export. When vesicles fuse with the plasma membrane during exocytosis, the vesicle releases its contents, and its membrane becomes part of the cell membrane, allowing the cell to maintain its size.