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...
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...
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) ...
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...
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...
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 ...
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 ‘...
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...
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...
