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

[EX Q]: Clear mucus is secreted before ejaculation to neutralize acidic urine remaining in the urethra.
[EX A]: What is secreted before ejaculation to neutralize acidic urine remaining in the urethra?

[EX Q]: Like skeletal muscle, cardiac muscle is striated.
[EX A]: Like skeletal muscle, cardiac muscle is what?

[EX Q]: Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms.
[EX A]:
What branch of science is based on the modern atomic theory, which states that all matter is composed of atoms?