CHEMISTRY CHEM 263

Exam (elaborations) AQA A LEVEL BIOLOGY PAPER 1 MARKING SCHEME 2020 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standardisation process ensures that the mark scheme covers the students’ responses to questions and that ev...