Describe the processes of endocytosis and exocytosis. Propose a model illustrating each process.
Endocytosis is the process of a cell taking in macromolecules by forming a vesicle around the substance with its own cell membrane. Exocytosis is the expulsion of material as a vesicle within a cell travels outwards and fuses with the membrane, opening up and ejecting the substances it was carrying.  |
| http://ibbiology.wikifoundry.com/page/Explain+how+vesicles+transport+materials+within+a+cell |
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