A magnet keeps a cabinet door closed. The Sun pulls on Earth as Earth moves around the Sun. The protons in the nucleus of a carbon atom are held together.So this is an example of the strong force in action.
You asked about strong force, the strong force keeps quarks together in clusters to make more-familiar subatomic particles, such as protons and neutrons.
Lipids differ from other large biological molecules in that they are not truly polymers ; Lipids are not all made of the same type of monomer. Their association as a group is related to their behavior rather than their structure.
