Final answer:
Bone, cartilage, and collagen are connective tissues with molecular differences. Cartilage provides support and flexibility, while bone is hard and provides protection and support. Collagen is a protein found in both bone and cartilage, providing structural support.
Step-by-step explanation:
Bone, cartilage, and collagen are all connective tissues, but they have molecular differences.
Cartilage is a connective tissue consisting of collagenous fibers embedded in a firm matrix of chondroitin sulfates. It provides support and flexibility.
Bone is the hardest connective tissue, composed of a mineralized matrix with collagen fibers. It provides protection, support, and stores minerals. Collagen, on the other hand, is a type of protein found in bone, cartilage, and other connective tissues. It provides structural support and strength.