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

[Q]: Some viruses carry a few viral enzyme molecules within their capsids.
[A]: Some viruses carry a few viral enzyme molecules within their what?


[Q]: Phototaxis is the term for movement toward light.
[A]: What is the term for movement toward light?


[Q]: Particles in the gas state of matter do not experience any force of mutual attraction or repulsion.
[A]:
Particles in what state of matter do not experience any force of mutual attraction or repulsion?