OCR AS Level Biology A H020/01 Breadth in biology JUNE 2022 QUESTION PAPER

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AS Level Biology A H020/01 Breadth in biology JUNE 2022 Time allowed: 1 hour 30 minutes INSTRUCTIONS • Use black ink. You can use an HB pencil, but only for graphs and dia... grams. • Write your answer to each question in the space provided. If you need extra space use the lined pages at the end of this booklet. The question numbers must be clearly shown. • Answer all the questions. • Where appropriate, your answer should be supported with working. Marks might be given for using a correct method, even if your answer is wrong. INFORMATION • The total mark for this paper is 70. • The marks for each question are shown in brackets [ ]. • This document has 24 pages. ADVICE • Read each question carefully before you start your answer. © OCR 2022 [601/4261/3] DC (ST/SG) 301080/4 OCR is an exempt Charity Turn over SECTION A You should spend a maximum of 25 minutes on this section. Write your answer for each question in the box provided. Answer all the questions. 1 The graph below shows the results of an osmosis experiment investigating the effect of changing the concentration of sodium chloride (NaCl) on mass of potatoes. 10 5 Percentage change in 0 mass –5 –10 Which concentration of NaCl causes equal movement of water into and out of the potato? A 0.36 mol dm–3 B 0.40 mol dm–3 C 0.42 mol dm–3 D 0.62 mol dm–3 Your answer [Show More]

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