Question

x - ray crystallography is used to see the structure of molecules. scientists have used this technique to find the structure of cholesterol, an important biological molecule. knowledge of the structure of cholesterol is helpful because it may affect
how cholesterol works in the body
the amount of cholesterol that is considered healthy.
previous ideas about which foods contain cholesterol.
previous explanations of how cholesterol works in the body

Explanation:

The structure of a molecule often determines its function. Knowing the structure of cholesterol can help understand how it functions in the body. The amount of healthy - cholesterol, food - cholesterol content and previous explanations are less directly related to the structural knowledge.

Answer:

how cholesterol works in the body