DNA和RNA都是由核苷酸构成，每一单元为由三部分组成的分子，一端是磷酸盐，中部是一种糖，另一端是碱基。
DNA and RNA are made of nucleotides. Each unit is a three-part molecule with a phosphate at one end, a sugar in the middle and a variable nucleobase at the other end.
我们都知道当刺激感受疼痛的神经元，其释放的化学物质称为核苷酸，特别是三磷酸腺苷(atp)。
It is already known that when pain-sensing neurons are stimulated, they release chemicals known as nucleotides, specifically adenosine triphosphate (ATP).
一磷酸腺苷单核苷酸，C10 H 14n5o 7p，发现于动物细胞中并能可逆地转化为二磷酸腺苷和三磷酸腺苷；一磷酸腺苷。
A mononucleotide, C10H14N5O7P, found in animal cells and reversibly convertible to ADP and ATP; adenosine monophosphate.
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