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a large combination of RNA and protein which catalyses the formation or synthesis of proteins from individual amino acids. Ribosomes are found in all living cells.
small groups of cells found in the pancreas that secrete the hormones insulin and glucagon.
the liquid found in the pleural cavity that acts as a lubricant.
a tough substance made from a modified polysaccharide that contains nitrogen. It is the main...
organisms that are unable to produce their own organic food and must therefore obtain nutrients...