Name the cell organelle which functions both as a passage way for intracellular transport and as a site for membrane genesis?

The cell organelle that functions both as a passageway for intracellular transport and as a site for membrane genesis is the endoplasmic reticulum (ER). The rough ER is involved in the synthesis of proteins and has ribosomes on its surface, while the smooth ER is responsible for lipid synthesis and detoxification processes. Together, these structures facilitate the movement of materials within the cell and contribute to the formation of cell membranes.