Much of this movement is to regulate the contents of the cell. This includes bringing material into the cell from the extracellular environment or the plasma membrane (endocytosis) or releasing material made within the the cell to the outside (exocytosis).
It really is an easy project...it just takes a little time. All and all, it took me about 6-8 total hours to make 4 bouquets, 10 bouts (my mom made those though) and about 15 centerpieces. I made two bouquets the day before our wedding and the other two the day of the wedding.
Timing the Invitations. It is customary to mail your wedding invitations about eight weeks before your wedding date. If you have already mailed your save-the-date cards, then your wedding guests will be expecting your actual wedding invitations in the mail. The process of choosing your wedding invitations and preparing them to be sent out can be time-consuming so it is important to not procrastinate and allow yourself plenty of time.