The Structure of ATP All organisms require a constant supply of energy to maintain their cells and stay alive This energy is required: In anabolic reactions – building larger molecules from ...
The Function of DNA & RNA Deoxyribonucleic acid?(DNA) and?ribonucleic acid?(RNA) are both types of?nucleic acid DNA and RNA are both?found in all living cells DNA and RNA are both needed to?bui...
Edexcel IGCSE Maths復(fù)習(xí)筆記 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...
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復(fù)習(xí)筆記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...
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復(fù)習(xí)筆記1.1.3 Multiplying & Dividing Fractions Dealing with mixed numbers Always turn Mixed Numbers into Top Heavy Fractions before doing calculations Dividing fractions Neve...
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...
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...
