AQA A-Level Biology Topic 1: Biological Molecules (2022/2023) Already Passed

What are monomers? Monomers are *small units* which are the components of larger molecules. What are polymers? Polymers are molecules made from *many monomers* joined together. What are examples of monomers? *Monosaccharides, amino acids* and *nucleotides* What are examples of polymers? *Polysaccharides, polypeptides* and *polynucleotides* What reaction allows two monomers to bond together? A *condensation reaction* allows *two monomers* to be joined together by a chemical bond, *releasing a water molecule*. What reaction breaks the chemical bond between two molecules? A *hydrolysis reaction* allows the chemical bond to break between two molecules and this happens due to the *addition of water*. What are carbohydrates? Carbohydrates are molecules which consist only of *carbon, hydrogen and oxygen*.