I need a concise yet thorough 5–7 page paper on acetylcholine that zeroes in on its biochemical structure and function. Please organise it into the classic academic flow—introduction, main text, conclusion, then a reference list—and keep direct quotations to a minimum so overall similarity stays below 25 %. Illustrated content is required. Feel free to decide whether a diagram, chart, infographic or a mix works best, but be sure at least two original, clearly labelled figures appear in the document to support key biochemical points. All sources (minimum ten, peer-reviewed wherever possible) must be cited and listed in strict APA format. Deliver the final file as an editable Word document (or Google Doc link) and include separate image files if you create figures externally. I will consider the job complete when: • The manuscript runs 5–7 pages, excluding the reference list. • Similarity index is < 25 %. • At least two bespoke figures are embedded and referenced in the text. • A minimum of ten APA-formatted references are provided. Please let me know if you need clarification on scope or preferred databases before starting.