A-level BIOLOGY Paper 1., 100% EXAMINABLE QUESTIONS AND ANSWERS. DOWNLOAD TO SCORE

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For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of thi... s page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). • Show all your working. • Do all rough work in this book. Cross through any work you do not want to be marked. Information • The marks for the questions are shown in brackets. • The maximum mark for this paper is 91. Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. A-level BIOLOGY Paper 12 *02* IB/H/Jun21/7402/1 Do not write outside the Answer all questions in the spaces provided. box 0 1 . 1 Describe the induced-fit model of enzyme action and how an enzyme acts as a catalyst. [3 marks] [Show More]

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