Edexcel IGCSE Maths复习笔记 1.3.1 Prime Factors
Edexcel IGCSE Maths复习笔记 1.3.1 Prime Factors What are prime factors? Factors are things that are multiplied together Prime numbers are numbers which can only be divided by themselves and 1 The p...
AQA A LEVEL BIOLOGY复习笔记1.4.1 Many Proteins are Enzymes
Enzymes as Proteins 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 c...
Edexcel IGCSE Maths复习笔记1.2.1 Recurring Decimals
Edexcel IGCSE Maths复习笔记1.2.1 Recurring Decimals What are recurring decimals? A rational number is any number that can be written as an integer (whole number) divided by another integer When you...
AQA A LEVEL BIOLOGY复习笔记1.3.1 Amino Acids & the Peptide Bond
Amino Acids & the Peptide Bond Proteins Proteins are polymers (and macromolecules) made of monomers called amino acids The sequence, type and number of the amino acids within a protein determin...
Edexcel IGCSE Maths复习笔记1.1.3 Multiplying & Dividing Fractions
Edexcel IGCSE Maths复习笔记1.1.3 Multiplying & Dividing Fractions Dealing with mixed numbers Always turn Mixed Numbers into Top Heavy Fractions before doing calculations Dividing fractions Neve...
AQA A LEVEL BIOLOGY复习笔记1.2.1 Lipids
Lipids Macromolecules which contain carbon, hydrogen and oxygen atoms. However, unlike carbohydrates lipids contain a lower proportion of oxygen Non-polar and hydrophobic (insoluble in water) There...
AQA A Level Biology复习笔记1.1.1 Biological Molecules: Key Terms
Biological Molecules: Key Terms There is much variety of life within and between organisms but the biochemical basis of life is similar for all living things The key molecules that are requi...
Edexcel IGCSE Maths复习笔记1.1.2 Adding & Subtracting Fractions
Dealing with mixed numbers Always turn Mixed Numbers into Top Heavy Fractions before doing calculations Adding & Subtracting Adding and subtracting are treated in exactly the same way: Find the...
Edexcel IGCSE Maths复习笔记1.1.1 Mixed Numbers & Top Heavy Fractions
What are mixed numbers & top heavy fractions? A mixed number has a whole number (integer) part and a fractioneg. 3 3/4 means “three and three quarters” A top heavy fraction – also called an imp...
