A-Level Biology and Chemistry revision notes | ExamKata

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AQA Biology · Topic 1

Biological molecules

8 subtopics · 8 notes written · Year 1

1.1Monomers and polymersMonomers and polymers · Condensation: building a polymer · Hydrolysis: breaking a polymerRead 1.2CarbohydratesMonosaccharides: the monomers · The two isomers of glucose · The glycosidic bond, condensation and hydrolysisRead 1.3LipidsFatty acids: saturated and unsaturated · Properties related to structure · Required practical: the emulsion test for lipidsRead 1.4ProteinsAmino acids: the monomers of proteins · The peptide bond · The four levels of protein structureRead 1.5Nucleic acids are important information-carrying moleculesNucleotides: the monomers of nucleic acids · DNA and RNA nucleotides differ · Joining nucleotides: the phosphodiester bondRead 1.6ATPThe structure of ATP · Hydrolysis of ATP releases energy · Resynthesis of ATPRead 1.7WaterThe water molecule: a dipole that hydrogen bonds · Water as a metabolite · Water as a solventRead 1.8Inorganic ionsWhat an inorganic ion is · The four ions you must know · Hydrogen ions (H+) and pHRead