The wormlike model of Kratky and Porod can be used to model semiflexible examples of them.
Entangled examples of these things are studied with the blob model of Pierre-Giles de Gennes. Self-avoiding walks were introduced to model these things. The wormlike model of Kratky and Porod can be used to model semiflexible examples of them. Modeling these things when the dihedral angle is limited to trans, gauche plus, or gauche minus can be done with the rotational isometric state model. The effective unit size for an ideal example of these models is the Kuhn length. When there's no hydrodynamic interaction, as in a (*) melt, springs and beads can be used to model these things in the Rouse model; adding hydrodynamic interactions yields the Zimm-Bragg model. When in a theta solvent, these things can be modeled as Gaussian, or freely-jointed. For 10 points, name these molecules modeled as chains of monomers.
Entangled examples of these things are studied with the blob model of Pierre-Giles de Gennes.
polymers [until "chains" is read, accept: polymer chains, ideal chains, freely-jointed chains; prompt on: proteins]