protein

英 ['pr??ti?n] 美['protin]

CET4TEM4IELTS考研TOEFLCET6中頻詞核心詞匯

復(fù)數(shù):?proteins;

protein 蛋白質(zhì)

proto-,原始的，最早的，-ine,化學(xué)名詞后綴，氨。后拼寫變?yōu)閜rotein.

protein: protein: [19] The word protein was coined (as French protéine) by the Dutch chemist Mulder in the late 1830s. He based it on late Greek prōteios ‘primary’, a derivative of Greek prótos ‘first’ (see PROTOZOA), the notion being that proteins were substances of ‘primary’ importance to the proper functioning of the body.
protein (n.): 1844, from French protéine, coined 1838 by Dutch chemist Gerhard Johan Mulder (1802-1880), perhaps on suggestion of Berzelius, from Greek proteios "the first quality," from protos "first" (see proto-) + -ine (2).

Originally a theoretical substance thought to be essential to life, further studies of the substances he was working with overthrew this, but the words protein and proteid continued to be used in international work on the matter and also for other organic compounds; the modern use as a general name for a class of bodies arose in German. The confusion became so great a committee was set up in 1907 to sort out the nomenclature, which it did, giving protein its modern meaning and banishing proteid.

1. Too much protein in the diet may advance the ageing process.: 飲食中攝入過量蛋白質(zhì)可能會加速衰老。

2. Researchers have isolated a new protein from the seeds of poppies.: 研究人員已經(jīng)從罌粟種子里分離出一種新的蛋白質(zhì)。

3. Milk products are an excellent source of calcium and protein.: 奶制品富含鈣與蛋白質(zhì)。

4. Protein molecules compose all the complex working parts of living cells.: 活細(xì)胞中所有復(fù)雜的運(yùn)行成分都由蛋白質(zhì)分子構(gòu)成。