IB DP Biology: HL复习笔记2.5.1 DNA & RNA Structure
Nucleic Acids: Structure The nucleic acids DNA and RNA are polymers of nucleotides Both DNA and RNA are polymers that are made up of many repeating units called nucleotides Each nucleotide is forme...
IB DP Biology: HL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: HL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: HL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: HL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...
IB DP Biology: HL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: HL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: HL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...
2022英美大学IB分数要求盘点！热门科目7分率如何？
虽然2022年5月IB官方取消了华东地区学生的所有考试，但最终上海、江苏、浙江及安徽的IB学生还是采用了免考试路线度过了这突如其来的“难关”： 非考试路径 评定标准 1学生提交的校内作业coursework 2老师给定可保...
