<span>Carbon has four valance electrons.
Carbon forms the backbone of all organic molecules.
Carbon can form bonds with four different atoms.
Carbon can from four covalent bonds with another carbon atom.</span>
<span>The answer would be: peripheral proteins anchored to the inner surface of their plasma membrane
Red blood cells have ankyrin and spectrin protein in their membrane that responsible for their biconcave shape. The shape itself is beneficial because it allows a larger surface area to accommodate gas exchange. It also allows the red blood cells to be squeezed into the narrow capillary blood vessels.</span>
its a theory because its not a fact, its one idea along with other ideas.
Answer:
Fracture of the lower jaw following tooth extraction is a rare and severe complication, occurring most often in the preangular region following third molar extraction. When left untreated, pseudoarthrosis can occur.
It contains a majority of the cells genetic material
