* a) esterify and store excess retinol

* b) Transport retinol-binding protein from blood to subretinal space

* c) Are secured laterally to each other by tight junction

* d) Are independent units and do not communicate electrically or metabolically with each other

* e) Dehydrate the subretinal space and create forces binding themselves to neurosensory retina

Answer a. T b. T c. T d. F e. T