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

Ex Input:
Phospholipids are vesicles made of.

Ex Output:
What are vesicles made of?


Ex Input:
Zero is the net force acting on an object when two equal forces are applied from opposite directions.

Ex Output:
What is the net force acting on an object when two equal forces are applied from opposite directions?


Ex Input:
A lysozyme destroys bacteria by digesting their cell walls.

Ex Output:
How does lysozyme destroy bacteria?