[edsheppa]

Chemical or biochemical products of cell metabolism don't walk down a path.

I thought they often were wrapped in a vesicle and "tagged" for transport to specific destinations.

[furball4paws]

"I thought they often were wrapped in a vesicle and "tagged" for transport to specific destinations."

Could you restate this using biological terminology, because I'm scratching and I don't have much hair left.