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a tail-like structure that some prokaryotic and eukaryotic cells use for movement.
a species that has a large effect on its environment relative to its abundance and plays an...
a drug that inhibits (slows down) the action of the nervous system.
an informal term for any living species which appears to be the same as a species otherwise only...
small, non-pigmented plastids that occur in roots and non-photosynthetic tissues of plants. They...