OCR A Level Biology:复习笔记2.2.14 Inorganic Ions
Inorganic Ions An ion is an atom (or sometimes a group of atoms) that has an electrical charge An ion that has a +ve charge is known as a cation An ion that has a -ve charge is known as an anion &n...
OCR A Level Biology:复习笔记2.2.13 Fibrous Proteins
Fibrous Proteins Fibrous proteins are long strands of polypeptide chains that have cross-linkages due to hydrogen bonds These proteins have little or no tertiary structure Due to a large number of ...
OCR A Level Biology:复习笔记2.2.12 Globular Proteins
Globular Proteins Globular Globular proteins are compact, roughly spherical (circular) in shape and soluble in water Globular proteins form a spherical shape when folding into their tertiary struct...
OCR A Level Biology:复习笔记2.2.11 Protein: Structure
Levels of Protein Structure 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 more polypeptid...
OCR A Level Biology:复习笔记2.2.10 Amino Acids & Peptide Bonds
Amino Acids Proteins Proteins are polypeptides (and macromolecules) made up of monomers called amino acids The sequence, type and number of the amino acids within a protein determines its shape and...
OCR A Level Biology:复习笔记2.2.9 Biochemical Tests: Lipids
Biochemical Tests: Lipids The emulsion test can be carried out quickly and easily in a lab to determine if a sample contains lipids Lipids are nonpolar molecules that do not dissolve in water but w...
OCR A Level Biology:复习笔记2.2.8 Lipids: Structure & Function
Lipids: Structure & Function Triglycerides Triglycerides are fats and oils Fatty acid and glycerol molecules are the components that make up triglycerides Fats and oils have a number of importa...
OCR A Level Biology:复习笔记2.2.7 Lipids & Ester Bonds
Lipids Lipids Lipids are macromolecules that contain carbon, hydrogen and oxygen atoms. Unlike carbohydrates, lipids contain a lower proportion of oxygen Lipids are non-polar and hydrophobic (insol...
OCR A Level Biology:复习笔记2.2.6 Biochemical Tests: Reducing Sugars & Starch
Biochemical Tests: Reducing Sugars & Starch There are a number of tests that can be carried out quickly and easily in a lab to determine if a sample contains a certain type of sugar The followi...
