Given a scientific question, generate a correct answer to it.

[EX Q]: Skeletal muscle cells and cardiac muscle cells share what property, which is not shared by smooth muscle cells?
[EX A]: striations

[EX Q]: What is formed when water vapor in the air condenses into tiny droplets?
[EX A]: fog

[EX Q]: The angle at which light bends when it enters a different medium is known as what?
[EX A]:
refraction