Final answer:
Fibroblasts can perform mitosis when they attach to a petri dish coated with fibronectin collagen and proteoglycans.
Step-by-step explanation:
Fibroblasts are cells that contribute to the formation of connective tissues. They secrete protein fibers, including collagen, which are important for the structure and strength of tissues. When fibroblasts attach to a petri dish coated with fibronectin collagen and proteoglycans, they can perform mitosis, which is the process of cell division. This allows the fibroblasts to divide and proliferate in culture.