Final answer:
Differentiated cells maintain their identity without continuous hormonal input, although hormones can influence cell function. Multicellular organisms utilize complex communication systems, including signal transduction, to coordinate cells.
Step-by-step explanation:
The statement that differentiated cells in multicellular organisms require hormonal input to 'remember' what type of cell they should be is generally false. Once cells have differentiated, they maintain their identity through a stable pattern of gene expression, which is not necessarily dependent on continuous hormonal signals. However, it's important to acknowledge that hormones can influence cell function and sometimes contribute to maintaining cell identity. Multicellular organisms exhibit complex communication to ensure proper function and coordination of their systems.
Development in multicellular organisms involves a process where all cells have the same genetic makeup but follow different instructions. This differentiation is part of a developmental program dictating cell type, location, and expansion. Furthermore, signal transduction in multicellular organisms is a critical process for the communication between cells to maintain homeostasis and coordinate growth and reproduction.