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

Saturated hydrocarbons hydrocarbons contain only single bonds between carbon atoms.
What hydrocarbons contain only single bonds between carbon atoms?

As a myotube is formed from many different myoblast cells, it contains many nuclei, but has a continuous cytoplasm.
As a myotube is formed from many different myoblast cells, it contains many nuclei, but has a continuous what?

Injuries can be prevented by getting proper rest and recovery.
Injuries can be prevented by getting proper what?