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

Q: Carbon 14 isotope of carbon is typically used to date ancient items.

A: What isotope of carbon is typically used to date ancient items?
****
Q: Phospholipids are the main component of the cell membrane.

A: What is the main makeup of the cell membrane?
****
Q: Experiment is the term for a test to see if a scientific explanation is right or wrong.

A:
What is the term for a test to see if a scientific explanation is right or wrong?
****