instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Like skeletal muscle, cardiac muscle is striated.
answer:
Like skeletal muscle, cardiac muscle is what?


question:
The frequency of a wave is the reciprocal of the period of the wave.
answer:
The frequency of a wave is the reciprocal of what other attribute of the wave?


question:
Second is the smallest unit of time commonly based on.
answer:
What is the smallest unit of time commonly based on?