How do the interiors of the ER, Golgi apparatus, endosomes, and lysosomes communicate with each other?
A. by fusing with one another
B. by open pores that allow ions to exit and enter the organelles
C. by excreting hormones and other small signaling molecules
D. by small vesicles that bud off of one organelle and fuse with another
E. They do not communicate with one another.
Ans: D. by small vesicles that bud off of one organelle and fuse with another
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