The molecules move from the ER to the Golgi bodies in transport vesicles.

Here's how it works:

1. Budding: Proteins and lipids synthesized in the ER are packaged into small, membrane-bound sacs called transport vesicles. These vesicles bud off from the ER membrane.

2. Transport: The transport vesicles move through the cytoplasm, guided by proteins, towards the Golgi apparatus.

3. Fusion: The transport vesicles arrive at the Golgi and fuse with its membrane. This releases the contents of the vesicles into the Golgi's lumen (internal space).

So, while the ER and Golgi bodies are separate organelles, they are connected by this constant flow of transport vesicles.