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polysaccharide found in plant cell walls.
a molecule that accelerates (speeds up) a chemical reaction, by lowering its activation energy,...
a clear, colourless, odourless and tasteless liquid that can also occur as a gas (water vapour)...
the widespread and rapid extinction of species in the present age due to negative human impact...
a small, corky pore or narrow line on the surface of the stem of a woody plant that allows the...
an infectious disease caused by the bacterium Mycobacterium tuberculosis thatusually...