2022-23CTB赛制和流程更新，火热报名组队中！
关注社科实践活动的家长和同学对CTB应该并不陌生。全球青年研究创新论坛CTB，由哈佛商学院和清华大学经管学院学者联合启动，旨在让中国青年心怀家国立足身边，提出原创本土解决方案，在世界舞台发声。 CTB 2022-2...
OCR A Level Biology:复习笔记2.4.9 Practical: Measuring Enzyme Activity
Practical: Measuring Enzyme Activity The progress of enzyme-catalysed reactions can be investigated by: Measuring the rate of formation of a product Measuring the rate of disappearance of a substra...
OCR A Level Biology:复习笔记2.4.8 Coenzymes, Cofactors & Prosthetic Groups
Coenzymes, Cofactors & Prosthetic Groups There are substances other than substrates and inhibitors that interact with enzymes Some enzymes can only function properly if another non-protein subs...
OCR A Level Biology:复习笔记2.4.7 Enzyme Activity: Enzyme Inhibitors
Enzyme Inhibitors Reversible inhibitors An enzyme's activity can be reduced or stopped, temporarily, by a reversible inhibitor There are two types of reversible inhibitors: Competitive inhibitors h...
OCR A Level Biology:复习笔记2.4.6 Enzyme Activity: Substrate Concentration
Enzyme Activity: Substrate Concentration The greater the substrate concentration, the higher the rate of reaction: As the number of substrate molecules increases, the likelihood of enzyme-substrate...
OCR A Level Biology:复习笔记2.4.5 Enzyme Activity: Enzyme Concentration
Enzyme Activity: Enzyme Concentration Enzyme concentration affects the rate of reaction The higher the enzyme concentration in a reaction mixture, the greater the number of active sites available a...
OCR A Level Biology:复习笔记2.4.4 Enzyme Activity: Temperature
Enzyme Activity: Temperature Enzymes have a specific optimum temperature This is the temperature at which they catalyse a reaction at the maximum rate Lower temperatures either prevent react...
哈佛和耶鲁大学法学院主动退出U.S. News排名！
哈佛大学、耶鲁大学的法学院宣布 退出U.S. News法学院的年度排名 为什么两所顶尖美国名校要做出这个决定？ 是否对U.S. News排名“权威”形成一种挑战？ 耶鲁大学：称霸32年，排名存在缺陷 耶鲁大学法学院院长Heat...
OCR A Level Biology:复习笔记2.4.3 Enzyme Activity: pH
Enzyme Activity: pH All enzymes have an optimum pH or a pH at which they operate best Enzymes are denatured at extremes of pH Hydrogen and ionic bonds hold the tertiary structure of the protein (ie...
