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

Ex Input:
As a myotube is formed from many different myoblast cells, it contains many nuclei, but has a continuous cytoplasm.

Ex Output:
As a myotube is formed from many different myoblast cells, it contains many nuclei, but has a continuous what?


Ex Input:
Some viruses carry a few viral enzyme molecules within their capsids.

Ex Output:
Some viruses carry a few viral enzyme molecules within their what?


Ex Input:
When electrons are shared equally, it is called nonpolar bonds.

Ex Output:

What is it called when electrons are shared equally?