Examlex
________ is the sound of blood flowing backward because of a defective heart valve.
Peptidoglycan
A polymer consisting of sugars and amino acids that forms a mesh-like layer outside the plasma membrane of most bacteria, providing structural support and shape.
Archaeal Cell Walls
The rigid or semi-rigid component that surrounds cells of archaea, differing in composition from bacterial and eukaryotic cell walls.
Bacterial Cell Walls
Rigid or semi-rigid structures that provide physical protection and shape to bacterial cells, mainly composed of peptidoglycan.
Ralph Waldo Emerson
An American essayist, lecturer, philosopher, and poet who led the transcendentalist movement of the mid-19th century.
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