GCSE BIOLOGY Foundation Tier Paper 1F

Tuesday 16 May 2023 Morning Time allowed: 1 hour 45 minutes Materials For this paper you must have: • a ruler • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • 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). • Do all rough work in this book. Cross through any work you do not want to be marked. • In all calculations, show clearly how you work out your answer. Information • The maximum mark for this paper is 100. • The marks for questions are shown in brackets. • You are expected to use a calculator where appropriate. • You are reminded of the need for good English and clear presentation in your answers. *jun23 4611F01* IB/M/Jun23/E19 8461/1F Answer all questions in the spaces provided. box Plants are made of cells, tissues and organs. . Which part of a plant is the largest? Tick () one box. [1 mark] A guard cell A leaf A root hair Students investigated the effect of concentration of salt solution on the mass of pieces of potato. This is the method used. 1. Cut two pieces of potato to the same size. 2. Record the mass of each piece of potato. 3. Place one piece of potato into a beaker containing a dilute salt solution. 4. Place the other piece of potato into a beaker containing a concentrated salt solution. 5. After 20 minutes, remove each piece of potato from its solution. 6. Record the change in mass of each piece of potato. 7. Repeat steps 1 to 6 two more times. Table 1 shows the results. Table 1 Solution Change in mass of piece of potato in grams Test 1 Test 2 Test 3 Mean Dilute salt solution 1.1 1.1 1.4 X Concentrated salt solution −7.2 −6.8 −32.4 −7.0