Answer:
Osteoblasts are cells that are responsible for bone formation. They produce and secrete matrix proteins, such as collagen, that provide the structural framework for bone. Osteoblasts also produce enzymes that help to mineralize the bone matrix, which gives bone its strength and hardness. When bone is damaged or needs to be repaired, osteoblasts are activated to form new bone tissue. Osteoclasts, on the other hand, are cells that are responsible for bone resorption, or the process of dissolving and breaking down bone tissue.