星期天,妈妈从菜市场买来了螃蟹,小问号看着那青灰色的螃蟹张牙舞爪,觉得真有意思。可是,妈妈从锅里端出蒸熟的螃蟹却变成红色的了,他奇怪地问妈妈:“螃蟹怎么变颜色了?”妈妈说:“在虾和螃蟹甲壳下面的皮层里,散布着象树叉似的能呈现出五颜六色的小细胞,当虾和螃蟹经过蒸煮、油炸后,其他各种颜色的小细胞都被破坏了,只有一种叫做‘类胡萝卜素’的小细胞与蛋白质相结合,变为红色物质。所以,我们吃的煮螃蟹或油炸大虾都是红灿灿的。” Sunday, my mother bought a crab from the vegetable market, a small question mark looking at the gray crab claws, I feel very interesting. However, the mother steamed crabs from the pan turned red, and he asked strangely strange mother: “Crab how to become a color?” “Mom said: ” in the cortex below the shrimp and crab shell, Scattered like a tree and fork can present a variety of small cells, when the shrimp and crab after cooking, fried, the other small cells of various colors have been destroyed, only a small cell called ’carotenoids’ When combined with the protein, it turns red, so the crabs or fried prawns we eat are red. "