Several rings of bone matrix in osteon cylinder. Contain collagen fibers that run in different directions in adjacent rings, withstands stress and resist twisting. Bone salts are found between collagen fibers.
What will be an ideal response?
Lamellae
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Which of the following explanations of the species-area relationship would be anticipated at the largest, global scales?
A) The number of species increases with area because larger areas contain a greater number of individuals. B) The number of species increases with area because larger areas have more habitats. C) The number of species increases with area because larger areas support distinct evolutionary lineages.
Calculate the partial pressure of oxygen at a barometric pressure of 500 mm Hg if oxygen is 20% of the air.
a. 500 mmHg b. 100 mmHg c. 20 mmHg d. 160 mmHg e. 10,000 mm H
Bacterial shape is determined by
a. tubulin and actin b. cell membrane c. cytoskeleton d. s-layers e. outer membrane
Hydrogen bonds are stronger then covalent bonds
Indicate whether the statement is true or false