sentence2_structure: Vesicles<>are<>basic tools of the cell for organizing metabolism, transport, and storage of molecules
sentence1: The resultant aggrecan molecules are transported to secretory vesicles and released into the extracellular matrix.
sentence2: Vesicles are basic tools of the cell for organizing metabolism, transport, and storage of molecules.
question: What are basic tools of the cell for organizing metabolism, transport, and storage of molecules?