Options: (a). spongin (b). calcium (c). carbon (d). collagen
Given those answer options, answer the question: Answer the following question given this paragraph: Osteoblasts make new bone cells and secrete collagen that mineralizes to become bone matrix. They are responsible for bone growth and the uptake of minerals from the blood. Q: What do osteoblasts secrete that mineralizes to become bone matrix? A:
A:
(d).