. Secretory vesicle fuse with the cell membrane to release their contents outside the cell. In this process, the membrane of the secretory vesicle becomes part of the cell membrane, because small pieces of the member are continually added to the cell membrane. Normally we would expect the cell membrane to increase in size. However the cell membrane stays the same size. Explain how this happen.

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?