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

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

A: As a myotube is formed from many different myoblast cells, it contains many nuclei, but has a continuous what?
****
Q: Air quality is a measure of pollutants in the air.

A: Air quality is a measure of what in the air?
****
Q: Sugar and lipids does fiber help keep at normal levels in the body.

A:
What does fiber help keep at normal levels in the body?
****