Basic structure Protozoa, the whole body consists of a singular cell. a protozoan cell is composed of 1)plasma membrane n2) cytoplasm:a. ectoplasm(外质)b endo|asm(内质) nucleusBasic structure ▪ Protozoa, the whole body consists of a singular cell. A protozoan cell is composed of : ▪ 1)plasma membrane ▪ 2)cytoplasm : a. ectoplasm(外质) b. endoplasm(内质) ▪ 3)nucleus