<span>The answer is osteoid. It begins with unmineralized collagen fibers
and ground substance. Later it becomes a calcified matrix. The matrix is mainly
made of collagen and calcium ions. When not well mineralized, osteoblasts proliferates
hence the bone will not have the desired strength. This results to deformation
of bone causing rickets</span>
Answer: b.
Primary - sequence of amino acids with peptide bonds
Secondary - a-helix and b-pleated sheets with hydrogen bonds
Tertiary- 3D structure held together by R-group (most proteins only go to this level)
Quaternary- multiple sequences of amino acid chains
Your answer is gonna be b! Hope it’s help
The inferior-posterior part of uterus, on its cervical end
