What is the difference between a non-polar molecule and a polar molecule? Are lipids a molecule?

Polar molecules occur when there is an electronegativity (a charge) difference between the bonded atoms. Nonpolar molecules offur when electrons are shapred between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.

Explanation:

Or basically, polar molecules occur with a charge, as nonpolar molecules do not. And yes, lipids are molecules.

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

straight probes are used primarily for measuring flow as it is approaching the test area. its geometry allows the probe to be mounted so that it is in the direct line of airflow.