A-Level美国大学换学分攻略
在众多家长学生眼里,A-Level申英国,AP申美国,八竿子打不着。 好吧,说个留学过期冷知识:A-Level,IB,AP都可以英美同申。而且A-Level可以在部分美国大学换分~ 事实上,A-Level课程的作用非常大,在美国和AP课...
在众多家长学生眼里,A-Level申英国,AP申美国,八竿子打不着。 好吧,说个留学过期冷知识:A-Level,IB,AP都可以英美同申。而且A-Level可以在部分美国大学换分~ 事实上,A-Level课程的作用非常大,在美国和AP课...
Action of Anticancer Drugs In the 1960s the drug cis-platin was discovered, which has been extremely effective in treating a number of different types cancer such as testicular, ovarian, cer...
DNA The nucleic acid DNA is a polynucleotide – it is made up of many nucleotides bonded together in a long chain A nucleotide is a building block consisting of a phosphate group, 2-deoxyribo...
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 change...
课改后IBDP HL数学考什么? IBO自2021年课改后,IBDP数学分为两大科目: 数学分析与方法AA(Analysis and Approaches)、 数学应用与解析AI(Application and Interpretation) AA比较偏向纯数学,AI更侧重具体应...
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 change...
Proteins Each amino acid contains an amine (-NH2) and carboxylic acid (-COOH) group The -NH2 group of one amino acid can react with the -COOH group of another amino acid in a condensation re...
Biodegradability Biodegradable polymers Both polyesters and polyamides can be broken down using hydrolysis reactions This is a major advantage over the polymers produced using alkene monomer...
Quaternary Ammonium Salts Quaternary ammonium salts are chemical analogues to ammonium chloride, NH4Cl, in which the hydrogens have been replaced by four alkyl groups They are very useful in...
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