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an enzyme which acts on proteins.
the complete set of alleles (different forms of genes) making up the genetic material of a...
a thick layer inside the primary cell wall. It consists mainly of cellulose, hemicellulose and...
an organ system that passes nutrients, gases, hormones, blood cells, etc. to and from cells in...
a pattern of abnormalities found in babies born to mothers who drank excessive amounts of...
the excessive growth of algae in eutrophic streams, rivers and dams.