True, the trachea is a cartilaginous tune that connects to the pharynx and larynx.
Heartwood. In contrast to sapwood, a term for the dead, clogged xylem cells near the center of a tree. Heartwood is the tree's main column of support.
The bee who is enthralled by the pollen gets some of it stuck to itself and travels with the plants offspring which ensures the plants reproduction. The wind blows the seeds of the dandelion to far off places to ensure the reproduction of the dandelion. The squirrel who is storing acorns for the winter will eat some of them, but other acorns are forgotten which ensures the reproduction of the acorn tree's reproduction.
The B-pleated sheet is held together by hydrogen bonds between adjacent segments.
In an a-helix the side chains are located on the outside of the helix
The secondary level of protein structure refers to the spatial arrangements of short segments of the protein
