What do the colors on the flag of Norway mean? Credit: Thinkstock Images Stockbyte Getty Images. The Union Jack is composed of the flags of three patron saints layered one over the other. The central red cross on a white field is the flag of St. George, the patron saint of England.
Synaptic vesicles contain thousands of neurotransmitter. The  neurotransmitters are packed into a small membrane bound synaptic  vesicles. There are thousands of neurotransm â¦ itter molecules.
For this reason, vesicles can digest cellular machinery and recycle cellular materials. To transport materials into or out of the cell, vesicles fuse with the cellâs plasma membrane and release or uptake contents from outside of the cell. In total, there are four main types of vesicles. Vacuoles are vesicles that contain mostly water and are found in plant cells. They transport water in and out of the cell.