The AQA A-level Biology Paper 3 (June 2023) assesses practical skills, experimental analysis, and conceptual understanding. Section A explores topics such as Pacinian corpuscle responses, yeast respiration, prokaryotic cell structures, and antibiotic resistance. Key investigations include measuring generator potentials, carbon dioxide production rates, and bacterial growth under antibiotics. Section B offers essay options focusing on organism-environment interactions or membrane functions in cells, requiring comprehensive biological knowledge and evaluative skills. Keywords: AQA Biology, Pacinian corpuscle, yeast respiration, antibiotic resistance, prokaryotic cells, generator potential, cell membranes, environmental interactions.