Pearson Edexcel Level 3 GCE Biology B - Past Papers
Write your name hereSurnameOther namesPearson EdexcelLevel 3 GCECentre NumberCandidate NumberBiology BAdvancedPaper 2: Advanced Physiology, Evolution andEcologyTuesday 20 June 2017 – MorningTime: 1 hour 45 minutesPaper Reference9BI0/02You must have:Calculator, HB pencil, rulerTotal MarksInstructionsUse black ink or ball-point pen. Fillboxes at the top of this page with your name, centrein thenumber and candidate number.Answerall questions. Show yourin any calculation questions and include units in your answer whereworkingappropriate.the questions in the spaces provided A– nswerthere may be more space than you need.may use a scientific calculator. Youn question(s) marked with an asterisk (*), marks will be awarded for your Iabilityto structure your answer logically showing how the points that youmake are related or follow on from each other where appropriate.Informationtotal mark for this paper is 90. Thefor each question are shown in brackets T–heusemarksthis as a guide as to how much time to spend on each question.Adviceeach question carefully before you start to answer it. Readto answer every question. TryCheck your answers if you have time at the end.P52213A 2017 Pearson Education Ltd.2/2/1/1/1/1/1/*P52213A0136*Turn over
and then1 Chemical control in plants is brought about by plant growth substances such as auxins.Auxins cause elongation of cells.Auxins weaken the bonds between molecules found in cell walls. Molecules found incell walls include cellulose and hemicellulose.(a) (i) Which of the following statements about cellulose molecules is correct?DO NOT WRITE IN THIS AREASome questions must be answered with a cross in a box .If you change your mind about an answer, put a line through the boxmark your new answer with a cross .DO NOT WRITE IN THIS AREAAnswer ALL questions.(1)A they are branched polymers(ii) The following statements relate to calcium pectate:1. found in the middle lamella2. holds cell walls together3. prevents the movement of waterWhich of the following is correct for calcium pectate?A statement 1 and statement 2(1)DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREAD they contain 1,6 glycosidic bondsDO NOT WRITE IN THIS AREAC they are bonded to each other by hydrogen bondsDO NOT WRITE IN THIS AREAB they contain α-glucoseB statement 1 and statement 3C statement 2 onlyD statement 3 only2*P52213A0236*
DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREA(b) A scientist investigated apical dominance in plants.In experiment 1, the shoot tips were cut off and the growth of lateral shoots assessed.This was repeated in experiment 2, but auxin was placed over the cut end of thetips and the growth of lateral shoots was assessed.The results are shown in the diagrams.Experiment 1cutlateral shootgrowthlateralshootsDO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREAExperiment 2cutauxinlateralshootsExplain how the interaction between auxins and cytokinins could have producedthe results shown in the diagram.(3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(Total for Question 1 5 marks)*P52213A0336*3Turn over
DO NOT WRITE IN THIS AREA(a) The diagram shows a vertical section through a human brain.XYDO NOT WRITE IN THIS AREA2 The brain is involved in many homeostatic b) An action potential results from the depolarisation of the membrane of a neurone.4Which row of the table shows the correct state of the ion channels during thisdepolarisation?Na channelsK en*P52213A0436*DO NOT WRITE IN THIS AREAControl ofbalanceDO NOT WRITE IN THIS AREAControl ofbreathing rateDO NOT WRITE IN THIS AREAWhich row of the table correctly matches the regions X, Y and Z with their functions?(1)DO NOT WRITE IN THIS AREA(1)
DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREA(c) The autonomic nervous system plays a role in regulating heart rate.The diagram shows an ECG trace from a student before and during exercise.before exercise0.1sDO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREAduring exercise0.1s(i) Calculate the heart rate of this student during exercise.(1)Answer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREA*P52213A0536*5Turn over
(ii) Describe how exercise results in an increased heart rate.(4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DO NOT WRITE IN THIS AREA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DO NOT WRITE IN THIS AREA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6*P52213A0636*DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREA(Total for Question 2 7 marks)DO NOT WRITE IN THIS AREA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DO NOT WRITE IN THIS AREA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREA3 In flowering plants, pollen grains grow pollen tubes that are involved in fertilisation,producing a zygote and endosperm.(a) (i) Which row of the table shows the correct description for these nuclei?EndospermnucleusPollen id(ii) The production of plant gamete cells involves both mitosis and meiosis.DO NOT WRITE IN THIS AREARelative mass of DNA in a cellDO NOT WRITE IN THIS AREAZygotenucleus(1)The graph shows the DNA content of a cell during the production of a pollen grain.(1)4321TimeThe order of nuclear divisions shown in the graph isDO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREAA meiosis, mitosis, mitosisB meiosis, mitosis, meiosisC mitosis, meiosis, meiosisD mitosis, mitosis, meiosis*P52213A0736*7Turn over
80 –70 –60 –40 –30 –20 –10 –0–011 1011 10–3 1 10–2 1 10–1Concentration of chemical A /μg cm–31 102011 1011 10–3 1 10–2 1 10–1Concentration of chemical B /μg cm–31 102DO NOT WRITE IN THIS AREA50 –DO NOT WRITE IN THIS AREAPercentage length of pollen tube (%)90 –DO NOT WRITE IN THIS AREA100 –DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREAA scientist investigated the effects of chemical A and chemical B on pollen tube growth.Chemical A prevents transcription.Chemical B prevents translation.Pollen grains were treated with different concentrations of these two chemicals.The lengths of the pollen tubes they produced were compared with a controlgroup of pollen grains.The lengths of the pollen tubes were measured and expressed as a percentage ofthe control group.The results are shown in the graphs.DO NOT WRITE IN THIS AREA(b)Percentage length of pollen tube (%)100 –90 –80 –70 –60 –50 –40 –30 –20 –10 –0–8*P52213A0836*
DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREA(i) The mean length of the pollen tubes in the control group was 7.5 mm.Calculate the mean length of the pollen tubes after adding 0.010 μg cm–3 ofchemical A.(2)DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREAAnswer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(ii) Analyse the data to comment on the effects of chemical A and chemical B onthe roles of transcription and translation in pollen tube growth.(4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DO NOT WRITE IN THIS AREADO NOT WRITE IN THIS AREA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(Total for Question 3 8 marks)*P52213A0936*9Turn over
DO NOT WRITE IN THIS AREA(a) The diagram shows some of the cells in a human retina.WXYCell YAbipolar cellcone cellrod cellBbipolar cellrod cellcone cellCganglion cellcone cellrod cellDganglion cellrod cellcone cell(ii) Draw an arrow on the diagram to show the direction of the light passing throughthe retina.(1)*P52213A01036*DO NOT WRITE IN THIS AREACell XDO NOT WRI
Pearson Edexcel Level 3 GCE Turn over . 2 *P52213A0236* DO NOT WRITE IN TIS AREA DO NOT WRITE IN TIS AREA DO NOT WRITE IN TIS AREA DO NOT WRITE IN TIS AREA DO NOT WRITE IN TIS AREA DO NOT WRITE IN TIS AREA Answer ALL questions
Pearson Edexcel GCE Physics 2017 Advanced Level Lis o daa ormulae and relaionshis Issue 2 Pearson Edexcel Level 3 Advanced Level GCE in Physics (9PH0) List of data, formulae and relationships Issue 2 Summer 2017 P57019RA 2017 Pearson Education Ltd. 1/1/1/1/1/1/ 2 P 27 2 BLANK PAGE. P .File Size: 246KB
University of Cambridge International Examinations London GCE AS/A-Level / IGCSE / GCSE Edexcel International. 6 Examination Date in 2011 Cambridge IGCSE Oct/Nov X 9 Cambridge GCE / May/Jun 9 9 London GCE London GCSE May/Jun 9 X Chinese London IGCSE Jan X 9 Cambridge IGCSE / May/Jun 9 9 London IGCSE London GCE Jan 9 9 Cambridge GCE Oct/Nov X 9 Private Candidates School Candidates Exam Date. 7 .
GCE AS / A Level M A Y / J U N E 2 0 1 5 EDEXCEL INTERNATIONAL EXAMINATIONS GCE AS / A Level MAY/JUNE 2016 UAE Edexcel International Examinations GCE AS / A Level May/June 2014 If there are any subjects not listed on the form that you would like to take please c
Pearson Edexcel Level 3 Advanced Subsidiary and Advanced GCE in Statistics Statistical formulae and tables For first certification from June 2018 for: Advanced Subsidiary GCE in Statistics (8ST0) For first certification from June 2019 for: Advanced GCE in Statistics (9ST0) This copy is the property of Pearson. It is not to be removed from the
Pearson Edexcel Level 3 Advanced GCE in Chemistry . Which is the best reason for why the boiling temperature of HF is much higher than that of HCl? (1) A the . have a smaller mass C there are intermolecular hydrogen bonds in HF D HF molecules have fewer electrons. Pearson Edexcel Level 3 Advanced GCE in
Biology B Specification Pearson Edexcel Level 3 Advanced GCE in Biology B (9BI0) First teaching from September 2015 First certification from 2017 Issue 4. Pearson Edexcel Level 3 Advanced GCE in Biology B (9BI0) Specification . First certification 2017 . Issue 4 . Edexcel, BTEC and LCCI qualifications
Pearson Edexcel Price List IGCSE and GCE A level November 2020 Bangladesh. IGCSE Subject Name Subject / Unit Name Unit Code Bangladesh Edexcel Pricing (Standard) (BDT) Bangladesh Edexcel . ENGLISH LITERATURE ENGLIS
The Pearson Edexcel Level 3 Advanced GCE in Economics A is designed for use in schools and colleges. It is part of a suite of GCE qualifications offered by Pearson. Purpose of the specification This specification sets out: the objectives of the qualification any other qualification
