The measured ratio of [Pi] to [glucose 1-phosphate] in myocytes under physiological conditions is more than 100 to 1. Why are the equilibrium and physiological ratios different? What is the possible significance of this difference?

在生理条件下肌细胞中[Pi]和[1-磷酸葡萄糖]的比例大于100:1。为什么生理比例和平衡比例不一样?这种不同可能有什么意义?

属类：化学及生命科学-化学-化学习题

The regulated steps of glycolysis in intact cells can be identified by studying the catabolism of glucose in whole tissues or organs.

在完好的细胞中糖酵解的调节步骤可以通过研究整个组织或器官中葡萄糖的分解代谢来鉴别。

属类：化学及生命科学-化学-化学习题

The keto form predominates in many aldehydes and ketones, the enol form in phenols. Sugars (e.g., glucose )exhibit tautomerism between open (chain)forms and closed (ring)forms. See also isomerism.

在许多醛和酮中酮基都是最主要的组分。烯醇基则组成酚。糖类(如葡萄糖)中有开放(链)式与闭合(环)式之间的互变异构。

属类：化学及生命科学-化学-

It is also found in various bacteria, fungi, and yeasts. Glycogen is a branched polysaccharide, a long chain of glucose units, into which it is broken down when energy is needed.

在许多细菌、真菌和酵母体内亦可见。肝糖是多糖的分支，由许多葡萄糖单位组成，机体需要能源时肝糖可降解为葡萄糖。

属类：化学及生命科学-化学-

The bioreaction was found to work not only with glucose but also with the fruit sugar fructosewith sucrosefound in sugar cane and sugar beetand even xylosea sugary byproduct of wood and straw

这一生化反应不仅适用于葡萄糖,而且适用于果糖、蔗糖(从甘蔗、甜菜中提取),甚至作为木头、稻草副产品的木糖。

属类：综合句库--

"Sucrose (C12H22O11)is a disaccharide; hydrolysis, by the enzyme invertase, yields "invert sugar" (so called because the hydrolysis results in an inversion of the rotation of plane polarized light), a 50:50 mixture of fructose and glucose , its two constituent monosaccharides."

蔗糖(C12H22O11)是双糖;由转化水解后产生转化糖(名称是因为水解产物会将偏极光的平面反转),果糖和葡萄糖各半,这是两种单糖成分。

属类：化学及生命科学-化学-

The hydrolysis of sucrose (specific rotation +66.5°)yields an equimolar mixture of D-glucose (specific rotation +52.5°)and D-fructose (specific rotation-92°).

蔗糖(比旋光度为+66.5°)的水解产生等摩尔的D-葡萄糖(比旋光度为+52.5°)和D-果糖

属类：化学及生命科学-化学-化学习题(比旋光度为-92°)

Sucrose is sweet than glucose but not as sweet as fructose.

蔗糖比葡萄糖甜,但没有果糖甜。

属类：综合句库--

A eukaryotic cell can use glucose (C6H12O6)and hexanoic acid (C6H14O2)as fuels for cellular respiration. On the basis of their structural formulas, which substance releases more energy on complete combustion to CO2 and H2O?

真核细胞可以利用葡萄糖(C6H12O6)和己酸(C6H14O2)作为细胞呼吸作用的燃料。根据他们的结构规则,哪种物质完全燃烧成CO2和H2O能释放出更多的能量?

属类：化学及生命科学-化学-化学习题

An enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose.

转化酶催化蔗糖水解为葡萄糖和果糖的一种酶

属类：综合句库--