AQA A Level Biology复习笔记1.4.3 How Enzymes Work
How Enzymes Work The lock-and-key hypothesis Enzymes are globular proteins This means their shape (as well as the shape of the active site of an enzyme) is determined by the complex tertiary...
AQA A Level Biology复习笔记1.4.2 Enzyme Specificity
Mode of Enzyme Action Enzymes have an active site where specific substrates bind forming an enzyme-substrate complex The active site of an enzyme has a specific shape to fit a specific subst...
AQA A Level Biology复习笔记1.3.8 The Molecular Structure of Collagen
The Molecular Structure of Collagen Collagen is the most common structural protein found in vertebrates In vertebrates it is the component of connective tissue which forms: Tendons Cartilage...
AQA A Level Biology复习笔记1.3.7 The Molecular Structure of Haemoglobin
The Molecular Structure of Haemoglobin Structure Haemoglobin is a globular protein which is an oxygen-carrying pigment found in vast quantities in red blood cells It has a quaternary structu...
AQA A Level Biology复习笔记1.3.6 Globular & Fibrous Proteins
Proteins: Globular & Fibrous Globular Globular proteins are compact, roughly spherical (circular) in shape and soluble in water Globular proteins form a spherical shape when folding into...
AQA A Level Biology复习笔记1.3.5 Biochemical Tests: Proteins
Biochemical Tests: Proteins The biuret test for proteins A liquid solution of a sample is treated with sodium or potassium hydroxide to make the solution alkaline A few drops of copper (II) ...
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 ...
