question: What does caffeine alter in the brain?
choices.text: neurotransmitters physical properties blood sugar changes form The functions of life taurine individual nerve cells complex chemistry
choices.label: A B C D E F G H
formatted_question: What does caffeine alter in the brain? (A) neurotransmitters (B) physical properties (C) blood sugar (D) changes form (E) The functions of life (F) taurine (G) individual nerve cells (H) complex chemistry