科学好英语好的请进。。

来源：百度知道 编辑：UC知道 时间：2024/07/04 18:34:03
用一句话解释以下物质（英文，配上中文解释更好～！）
starch（淀粉）
glycogen（糖原）
simple sugars（单糖）
示例：
cellulose（纤维素）：it's a structural material in plants
万分感谢～！！
有追加～
一句话～
要解释它是什么，不是它的性质～～

starch（淀粉):a polysaccharide composed of glucose units that occurs widely in plant tissues in the form of storage granules, consisting of amylose and amylopectin.
glycogen（糖原）：a polysaccharide consisting of glucose units: the form in which carbohydrate is stored in the liver and muscles in man and animals. It can easily be hydrolysed to glucose.
simple sugars（单糖）：are the most basic unit of carbohydrates.

Starch (Starch)
淀粉是由葡萄糖单元以α -糖苷的形式，通过l ， 4-结合而成的一种非还原性多羟基物质，分子式为C 6 H 10 0 5无味无臭的白色粉末，相对密度l ． By the glucose unit of starch to α - glucoside form, through the l, 4 - a combination of polyhydroxy non-reducing substances, molecular formula as C 6 H 10 0 5 odorless and tasteless white powder, relative density l. 499 ～ 1 ． 513 。 499 ~ 1.513. 有吸湿性。 Have hygroscopicity.

Glycogen
糖原（glycogen）由许多葡萄糖缩合成的支链多糖（支链比支链淀粉多）。 Glycogen (glycogen) glucose reduced by a number of synthetic branched-chain polysaccharide (branched-chain more than amylopectin). 是动物体内