Proteins called growth factors regulate the timing of the cell cycle in eukaryotic cells True or false?

True. Growth factors are proteins that play crucial roles in regulating the timing of the cell cycle in eukaryotic cells by promoting cell division and influencing various phases of the cycle. They bind to specific receptors on the cell surface, triggering signaling pathways that can stimulate or inhibit cell proliferation. This regulation is essential for proper tissue development, repair, and maintenance.