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hormone produced by the pancreas, which catalyses the conversion of glycogen to glucose.
a structure that is used by molluscs for feeding. It is a minutely toothed, chitinous ribbon...
an organelle that occurs in the cytoplasm of both plant and animal cells. It is made from stacks...
(also called renal failure) the condition in which the kidneys are no longer able to function...
energy resources such as coal and oil, which are being used up much more quickly than they can...