General name for flagella and cilia. It consists of an axoneme built of nine pairs of microtubules surrounding an inner pair. This structure is anchored to the eukaryotic cell by a kinetosome. Plural, undulipodia.

A nitrogenous base that pairs with adenine in RNA. When you see a string of letters that are used to describe RNA, such as AGUCCGUUAUAUUGC, "U" stands for uracil.

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