Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Vesicles are basic tools of the cell for organizing metabolism, transport, and storage of molecules.
What are basic tools of the cell for organizing metabolism, transport, and storage of molecules?

Phospholipids are vesicles made of.
What are vesicles made of?

Water can be boiled to kill giardia and most other pathogens.

Water can be boiled to kill giardia and most other what?