Why would a scientist trying to isolate osteoblasts look between the periosteum and the bone in a young animal to find them?
What will be an ideal response?
In growing bones, new bone tissue is deposited more heavily on the outside, or periosteal surface, of a bone. Since it is the osteoblasts that add bone tissue, they are found in higher proportions on the periosteal surface of the bone.
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Do all of the carbon atoms in glucose participate in the formation of the ring?
a. yes b. no
Which of the following is a phagocyte that acts to alert the adaptive immune system of the presence of antigen in solid
tissue?
a. macrophages b. monocytes c. neutrophils d. dendritic cells e. eosinophils
Human ears detect sounds in the range of
A. 10 to 15,000 hertz. B. 20 to 20,000 hertz. C. 25,000 to 50,000 hertz. D. 100,000 to 150,000 hertz. E. 25,000 to 250,000 hertz.
The ____ consists of a whorl of petals.
A. calyx B. sepal C. corolla D. carpel E. stamen