The structure labeled as 2 is the: 
Definitions:
Golgi Bodies
Organelles in cells that process and package proteins and lipid molecules.
Protein Packages
Specialized structures within cells designed to transport, store, or degrade proteins as needed for various cellular functions.
Endoplasmic Reticulum
A network of membranes within cells that is involved in protein and lipid synthesis.
Cell Membrane
The lipid bilayer that surrounds a cell, regulating the entry and exit of substances.
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