Cell membrane components are synthesized in the endoplasmic reticulum, transported as vesicles to the Golgi apparatus where they are modified, and then are transported to the cell surface where they deliver their contents to the cells exterior and become a part of the cell membrane in a process called ____________. The reverse of this process, bringing nutrient containing particles from out side to the inside of the cell is called _________.

A.	exocytosis; endocytosis
B.	active transport; passive transport
C.	simple diffusion; facilitated diffusion
D.	osmosis; diffusion