如何写A-Level经济学大作文？
在A-Level经济学考试中，最难的部分非essay question莫属！这不仅因为题目多变的提问方式，也因为考官对于考生的高要求。很多学生觉得自己清楚题目中的知识点，但是最终得到的分数却不尽如人意。那么怎么样才能写...
IB DP Biology: SL复习笔记2.4.3 Skills: Enzyme Experiments
Practical 3: Enzyme Experiments Design of experiments to test the effect of temperature, pH and substrate concentration on the activity of enzymes Three different independent variables can be teste...
IB DP Biology: SL复习笔记2.4.2 Immobilised Enzymes
Immobilised Enzymes Immobilised enzymes are widely used in industry Just before 1900, it was discovered that enzymes could be used to catalyse production of alcohol in the absence of yeast cell Sin...
IB DP Biology: SL复习笔记2.4.1 Enzymes
Structure of Enzymes Enzymes are biological catalysts ‘Biological’ because they function in living systems ‘Catalysts’ because they speed up the rate of chemical reactions without being used up or ...
IB DP Biology: SL复习笔记2.3.4 Skills: Molecules
Molecular Diagrams: Drawing Drawing biological molecules It is important to be able to draw a few key molecules There is a huge variety of biological molecules, but only the most important ones are...
牛津大学成立生物系，2022年8月正式开始
牛津大学要开设新院系了！ 图源：牛津大学官网 这所新院系是什么来头，具体教学什么样的专业，更重要的是录取要求有多高？一起来看看吧~ 牛津大学成立生物系 牛津大学这次新开的院系是生物系（Department of Biol...
IB DP Biology: SL复习笔记2.3.3 The Variety of Proteins
Functions of Proteins Living organisms synthesize many different proteins with a wide range of functions Proteins are so versatile that they have many different roles in cells, tissues and organs A...
IB DP Biology: SL复习笔记2.3.2 Protein Structure & Function
Protein structure A protein may consist of a single polypeptide or more than one polypeptide linked together Some proteins exist as a single polypeptide chain (of amino acids) Other proteins are ma...
IB DP Biology: SL复习笔记2.3.1 Proteins
Amino Acids & Polypeptides Proteins Proteins are polymers (and macromolecules) made of monomers called amino acids The sequence, type and number of the amino acids within a protein determines i...
IB DP Biology: SL复习笔记2.2.5 Skills: Calculating BMI
Body Mass Index Calculations Body Mass Index (BMI) is a rough and ready measure of a person’s mass in relation to their height The calculation of BMI is as follows A BMI below 18.5 is considered un...
IB DP Biology: SL复习笔记2.2.4 Skills: Visualising Carbohydrates
Molecular Visualisation: Carbohydrates Online learning tools exist that can provide visualisations of large biomolecules Mouse functions can zoom and rotate molecules Many of these make use of JMol...
IB DP Biology: SL复习笔记2.2.3 Lipids
Long Term Storage Lipids are excellent storage compounds Lipid macromolecules, like carbohydrates, contain carbon, hydrogen and oxygen atoms However, unlike carbohydrates, lipids contain a low prop...
