ib english
Previous IB Exam Essay Questions: Unit 10 Use these model essay questions and responses to prepare for essay questions on your in-class tests, as well as the IB Examination, Paper 3. The questions below have appeared on IB HL Examinations over the past several years. The answers following the questions are the markscheme ideal responses used to evaluate student examination responses. 1. Outline the experiments of Miller and Urey into the origin of organic compounds on Earth. 6 marks apparatus contructed in which chemicals could circulate gases of pre-biotic Earth`s atmosphere mixed inside methane (as a carbon source) ammonia water vapor and hydrogen sparks/ electric discharge (to simulate lightning) high temperature/ boiling water no free oxygen