AQA A Level Biology复习笔记1.3.4 Protein Interactions
Proteins: Interactions & Shape A polypeptide chain will fold differently due to the interactions (and hence the bonds that form) between R groups. The three-dimensional configuration that forms...
AQA A Level Biology复习笔记1.3.3 Protein Structure & Function
Proteins: Structures & Functions There are four levels of structure in proteins, three are related to a single polypeptide chain and the fourth level relates to a protein that has two or...
AQA A Level Biology复习笔记1.3.2 Chromatography: Amino Acids
Chromatography: Amino Acids Chromatography is a technique that can be used to separate a mixture into its individual components Chromatography relies on differences in the solubility of the ...
AQA A Level Biology复习笔记1.2.5 Lipid Diagrams & Properties
Lipid Diagrams & Properties Triglycerides are a form of lipid They are made up of one molecule of glycerol with three fatty acids attached to it These fatty acids have long hydrocarbon ‘...
AQA A Level Biology复习笔记1.2.4 Biochemical Tests: Lipids
Biochemical Tests: Lipids The emulsion test that can be carried out quickly and easily in a lab to determine if a sample contains lipids This test is qualitative - it does not give a quantit...
AQA A Level Biology复习笔记1.2.3 Phospholipids
The Vital Role of Phospholipids Structure Phospholipids are a type of lipid, therefore they are formed from the monomer glycerol and fatty acids Unlike triglycerides, there are only two fatt...
AQA A Level Biology复习笔记1.2.2 Triglyceride Function
Triglycerides: Structure & Function Energy storage The long hydrocarbon chains contain many carbon-hydrogen bonds with little oxygen (triglycerides are highly reduced) So when triglyceri...
AQA A Level Biology复习笔记1.1.11 Finding the Concentration of Glucose
Finding the Concentration of Glucose Benedict’s solution can be used to carry out a semi-quantitative test on a reducing sugar solution to determine the concentration of reducing sugar prese...
盘点2022 A-level最难科目
A-level中什么科目最难？哪个考试局最难？一个老生常谈又常谈常新的话题。A-level科目难度因人而异，但普遍印象中这十个科目是最难学的： A-level Further Maths A-level Modern Foreign Languages A-level Chemi...
