A complete summary of core practicals 1-18 from the Edexcel SNAB A Level Biology course. Includes mark scheme specifics and key details for each procedure. Includes the following practicals: Effect of caffeine on HR in Daphnia, Vitamin C content of food and drink, Membrane permeability (beetroot), Enzyme and substrate concentrations, Observing stages of mitosis, Identifying structures in a stem, Plant mineral deficiencies, Tensile strength of plant fibres, Antimicrobial properties of pl...