Biology 4bi1 1b 4sd0 1b mark scheme answer.

Biology 4bi1 1b 4sd0 1b mark scheme answer pdf), Text File (. You must have: Calculator, ruler Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B Afternoon (Time: 2 hours Jun 4, 2021 · Mark Scheme (Results) Summer 2021 . View the Mark Scheme of Paper 1 (January 2020) of the IGCSE Biology Edexcel (4BI1) syllabus. · There is no ceiling on achievement. • Answer the questions in the spaces provided – there may be more Sep 4, 2021 · the mark scheme should be used appropriately. the mark scheme should be used appropriately. Fill in the boxes at the top of this page with your name Read each question carefully before you start to answer it. Jun 1, 2022 · Paper code: 4BI1/1B. • Answer all questions. Fill in the boxes at the top of this page with your Jan 4, 2023 · Read each question carefully before you start to answer it. 2 Answer ALL questions. Information • The total mark for this paper is 110. Fill in the boxes at the top of this page with your name Mar 2, 2023 · • All the marks on the mark scheme are designed to be awarded. Afternoon (Time: 2 hours) Paper Reference 4BI1/1BR 4SD0/1BR Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1BR You must have: Calculator, ruler P62058A *P62058A0132* ©2020 Pearson Education Ltd. Biology UNIT: 4BI Science (Double Award) 4BI1/4SD PAPER: 1B Time 2 hours 4BI1/1B 4SD0/1B Pearson Edexcel International GCSE (9–1) P72471A ©2023 Pearson Education Ltd. Examiners should always award full marks if deserved, i. J:1/1/1/1/ P72471A0232. Examiners should also be · All the marks on the mark scheme are designed to be awarded. You must have: Calculator, ruler Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1B Time 2 hours 4BI1/1B 4SD0/1B Aug 23, 2017 · There is no ceiling on achievement. Mar 4, 2021 · the answer matches the mark scheme. Answer Mark 1(c) D yes yes (1) Aug 24, 2023 · Mark Scheme (Results) Summer 2023 Pearson Edexcel International GCSE In Biology (4BI1) Paper 1B and Science (Double Award) (4SD0) Paper 1B May 17, 2023 · 4bi1-1b-que-20230517 - Free download as PDF File (. Pearson Edexcel International GCSE (9–1) Centre Number Candidate Number You must have: Total Marks Calculator, ruler Biology Unit: 4BI1 Science (Double Jan 4, 2023 · Read each question carefully before you start to answer it. Biology UNIT: 4BI1 Science (Double Award) 4BI1/4SD0 PAPER: 1B You must have: Ruler, calculator Instructions •• Use black ink or ball-point pen. No June 2023 Paper 1B: Biology 4SD0/1B (QP) June 2023 Paper 1B Feb 11, 2021 · deserved, i. Total Marks. Jan 11, 2022 · Read each question carefully before you start to answer it. . If you change your. Read each question carefully before you start to answer it. v odujhvw dzduglqj erg\ :h surylgh d zlgh udqjh ri txdolilfdwlrqv lqfoxglqj dfdghplf yrfdwlrqdo rffxsdwlrqdo dqg vshflilf surjudpphv iru Jan 4, 2023 · Afternoon (Time: 2 hours) Paper Reference 4BI1/1BR 4SD0/1BR Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1BR You must have: Calculator, ruler P62038A *P62038A0124* ©2020 Pearson Education Ltd. Fill in the boxes at the top of this page with your name, www. reference. Mark Scheme Paper 1B Mar 5, 2020 · the mark scheme should be used appropriately. You must have: Calculator, ruler Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B Afternoon (Time: 2 hours Jan 8, 2018 · mark scheme should be used appropriately. Aug 22, 2019 · Answer Mark 3(a) The only correct answer is A cortex B is not correct as it is not in the collecting duct C is not correct as it is not in the loop of Henle D is not correct as it is not in the medulla 1 Question Number Answer Additional guidance Mark 3(b) 64 to 66 (1) Allow mark if seen on graph 1 Question Number Answer Mark Nov 5, 2024 · BI1 Science (Double Award) 4SD0 PAPER: 1B You must have: Ruler, calculator Instructions • Use black ink or ball-point pen. View the Mark Scheme of Paper 1 (June 2022) of the IGCSE Biology Edexcel (4BI1) syllabus. www. • Fill in the boxes at the top of this page with the mark scheme should be used appropriately. Pearson Edexcel International GCSE . Jan 10, 2023 · UNIT: 4BI1 Science (Double Award) 4BI1/4SD0 PAPER: 1B You must have: Total Marks Ruler, calculator Instructions • Use black ink or ball‑point pen. • centrethe Fill in boxes at the top of this page with your name, number and candidate number. Mark Scheme (Results) January 2021 . Take in the view of the city unobstructed from inside or on the balcony at our modern condo. Fill in the boxes at the top of this page with your name Nov 7, 2020 · Read each question carefully before you start to answer it. The document provides examination details for a Biology exam, including: - The date and time of the exam - Details of the papers to be taken, including the total marks - Instructions on how to complete the exam, such as using black ink and answering all questions - Advice for candidates such as Biology UNIT: 4BI1 Science (Double Award) 4BI1/4SD0 PAPER: 1B You must have: Ruler, calculator Instructions •• Use black ink or ball-point pen. • Fill in theis boxes If pencil used for diagrams/sketches/graphs it must be dark (HB or B). You must have: Calculator, ruler Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1B Time 2 hours 4BI1/1B 4SD0/1B Pearson Edexcel International GCSE Paper 1 (4BI1/1B and 4SD0/1B) Question number Answer Mark 1(a) A description that makes reference to the following three points: Lactobacillus (1) lactose (1) lactate/lactic acid (1) 3 Question number Answer Mark 1(b) An answer that makes reference to the following points: fruit provides vitamin C to prevent scurvy (1) Mar 5, 2020 · Afternoon (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Calculator, ruler P59937A *P59937A0132* ©2020 Pearson Education Ltd. deserved, i. We provide a wide range of qualifications including academic, vocational, occupational and specific programmes for employers. e. View the Mark Scheme of Paper 1 (January 2022) of the IGCSE Biology Edexcel (4BI1) syllabus. • Some questions must be answered with a cross in a box . igexams. mind about an answer, put a line through the box and then mark your new answer with a cross. In Biology (4BI1) Paper 1B and Science (Double Award) (4SD0) Paper 1B May 15, 2019 · Read each question carefully before you start to answer it. Where some judgement is required, mark schemes will provide the principles by which marks will be awarded and exemplification may be limited. Jun 4, 2021 · Answer Mark 4(b)(iv) An answer that makes reference to two of the following points: Increase your exam confidence with these Edexcel (Pearson) IGCSE Biology past papers. You must have: Calculator, ruler Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1B Time 2 hours 4BI1/1B 4SD0/1B Pearson Edexcel International GCSE May 11, 2024 · Morning (Time: 2 hours) Paper 4BI1/1B 4SD0/1B reference Total Marks Biology UNIT: 4BI Science (Double Award) 4SD PAPER: 1B You must have: Ruler, calculator Instructions • Use black ink or ball-point pen. • Answer all All the marks on the mark scheme are designed to be awarded. Access the specification and track your progress at MTA. • Write your answers neatly and in good English. Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B Morning (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Friday 8 January 2021 Pearson Edexcel Afternoon (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Calculator, ruler P59937A *P59937A0132* ©2020 Pearson Education Ltd. Jan 25, 2024 · Mark Scheme (Results) November 2023 Pearson Edexcel International GCSE In Biology (4BI1) Paper 1B and Science Double Award (4SD0) Paper 1B Paper 1 (4BI1/1B and 4SD0/1B) Question number Answer Mark 1(a) A description that makes reference to the following three points: Lactobacillus (1) lactose (1) lactate/lactic acid (1) 3 Question number Answer Mark 1(b) An answer that makes reference to the following points: fruit provides vitamin C to prevent scurvy (1) Edexcel (4BI1) IGCSE Biology past papers and mark schemes. Edexcel and BTEC Qualifications Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest awarding body. This is the current syllabus. You must have: Ruler, calculator. In Biology (4BI1) Paper 1B and Science (Double Award) (4SD0) Paper 1B www. 1/1/1/1/ Turn over Instructions •• Use black ink or ball‑point pen. Aug 4, 2023 · The total mark for this paper is 110. Jun 4, 2022 · Read each question carefully before you start to answer it. You must have: Ruler, calculator Biology UNIT: 4BI1 Science (Double Award) 4BI1/4SD0 PAPER: 1B Time 2 hours 4BI1/1B 4SD0/1B Pearson Edexcel International GCSE (9–1) P72471A ©2023 Pearson Education Ltd Nov 7, 2020 · Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Total Marks Calculator, ruler Instructions • Use black ink or ball-point pen. Brand new 1BE+1BA condo in the center of Richmond. PMT Jun 4, 2022 · Mark Scheme (Results) January 2021 . Mar 4, 2021 · Mark Scheme (Results) January 2021 . • Where some judgement is required, mark schemes will provide the principles by which marks will be awarded and exemplification may be limited. Increase your exam confidence with these Edexcel IGCSE Biology Paper 1B past papers. Includes exam papers and mark schemes organised by year. if the answer matches the mark scheme. In Biology (4BI1) Paper 1B and Science (Double Award) (4SD0) Paper 1B Aug 25, 2022 · • All the marks on the mark scheme are designed to be awarded. 1/1/1/1/1/1/ Turn over Instructions •• Use black ink or ball-point pen. Aug 22, 2024 · In Biology (4BI1) Paper 1B Edexcel and BTEC Qualifications Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest awarding body. Fill in the boxes at the top of this page with your name, • centre number and candidate number. The Edexcel Biology IGCSE past papers are free to view and download. Advice •• Read each question carefully before you start to answer it. • Fill in the boxes at the top of this page with your name, Biology UNIT: 4BI1 Science (Double Award) 4BI1/4SD0 PAPER: 1B You must have: Ruler, calculator Instructions •• Use black ink or ball-point pen. Instructions • Use black ink or ball-point pen. Pearson Edexcel International GCSE In Biology (4BI1) Paper 1B and Science (Double Award) (4SD0) Paper 1B Edexcel and BTEC Qualifications. Jan 1, 2021 · Mark Scheme (Results) January 2021. You must have: Calculator, ruler Biology Unit: 4BI1 Science (Double Award) 4SD0 PAPER: 1B 2 hours 4BI1/1B 4SD0/1B Pearson Edexcel International GCSE (9–1) Aug 22, 2019 · Answer Mark 1(a) D owl A is incorrect because corn is a producer B is incorrect because the grasshopper is a primary consumer C is incorrect because the mouse is a primary consumer 1 Question Number Answer Mark 1(b) An explanation that makes reference to two of the following points: photosynthesis (1) Feb 11, 2021 · deserved, i. Find Edexcel IGCSE Biology Past Papers and Mark Scheme Download Past exam papers for Edexcel Biology IGCSE Biology 4BI1 Specification. • Answer all May 17, 2023 · Biology UNIT: 4BI1 Science (Double Award) 4BI1/4SD0 PAPER: 1B You must have: Ruler, calculator Instructions •• Use black ink or ball-point pen. Examiners should also be prepared to award zero marks if the candidate’s response is not May 11, 2024 · Morning (Time: 2 hours) Paper 4BI1/1B 4SD0/1B reference Total Marks Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1B You must have: Ruler, calculator Instructions •• Use black ink or ball-point pen. Jan 1, 2020 · Paper code: 4BI1/1B. • Answer the questions in the spaces provided. Advice • Read each question carefully before you start to answer it Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Total Marks Calculator, ruler Instructions • Use black ink or ball-point pen. Oct 4, 2021 · deserved, i. Dec 4, 2022 · the mark scheme should be used appropriately. You must have: Calculator, ruler Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1B Time 2 hours 4BI1/1B 4SD0/1B May Half-Term GCSE Biology Exam Technique Course Get ready for AQA Paper 2 with our one-day online course on 27th May. View the Mark Scheme of Paper 1 (June 2020) of the IGCSE Biology Edexcel (4BI1) syllabus. All the marks on the mark scheme are designed to be awarded. You must have: Calculator, ruler Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B Afternoon (Time: 2 hours Sep 4, 2021 · Answer Mark 1(a) D owl A is incorrect because corn is a producer B is incorrect because the grasshopper is a primary consumer C is incorrect because the mouse is a primary consumer 1 Question Number Answer Mark 1(b) An explanation that makes reference to two of the following points: photosynthesis (1) Mark Scheme (Results) January 2021 . The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. · All the marks on the mark scheme are designed to be awarded. Search BC's Course Curriculum. Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest awarding body. 4BI1/1B 4SD0/1B Pearson Edexcel May 17, 2023 · Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1BR You must have: Calculator, ruler Instructions •• Use black ink or ball-point pen. there may be more space than you need. Start studying; Study tools. You must have: Calculator, ruler Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B Afternoon (Time: 2 hours Mar 4, 2024 · Read each question carefully before you start to answer it. • Answer all Jun 1, 2020 · Paper code: 4BI1/1B. In Biology (4BI1) Paper 1B and Science (Double Award) (4SD0) Paper 1B Answer Mark 2(c Read each question carefully before you start to answer it. com Please check the examination details below before entering your candidate information Candidate surname Pearson Edexcel International GCSE (9–1) Other names Centre Number Candidate Number Tuesday 12 May 2020 Afternoon (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Calculator, ruler Total Marks IGCSE Biology Past Papers, Mark Schemes, and Resources (Edexcel) | Largest Past Paper Collection Online - Smart Study Campus Paper 1 (4BI1/1B) 2024 May/June May 11, 2024 · Morning (Time: 2 hours) Paper 4BI1/1BR 4SD0/1BR reference Total Marks Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1BR You must have: Ruler, calculator Instructions •• Use black ink or ball-point pen. • Show all the steps in any calculations and state the units. • Check your answers if you have time at the end. Apr 27, 2021 · Read each question carefully before you start to answer it. txt) or read online for free. Fill in the boxes at the top of this page with your name Jan 4, 2023 · Afternoon (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Calculator, ruler P59937A *P59937A0132* ©2020 Pearson Education Ltd. Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B Morning (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Friday 8 January 2021 Pearson Edexcel International GCSE (9–1) P67075RA ©2021 Pearson Education Ltd. Fill in the boxes at the top of this page with your name Paper Time 2 hours reference 4BI1/1B 4SD0/1B Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1B You must have: Total Marks Calculator, ruler. Fill in the boxes at the top of this page with your name, Nov 7, 2023 · Biology UNIT: 4BI1 Science (Double Award) 4BI1/4SD0 PAPER: 1B You must have: Ruler, calculator Instructions •• Use black ink or ball-point pen. Pearson Edexcel International GCSE (9-1) Biology (4BI1/1B 4SD0/1B) PAPER 1BMay 2024 + mark scheme. • If pencil is used for diagrams/sketches/graphs it must be dark (HB or B). • Answer all Sep 4, 2021 · Read each question carefully before you start to answer it. Boost your revision with exam-style questions, mark schemes, and model answers. Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B Morning (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Friday 8 January 2021 Pearson Edexcel Nov 5, 2024 · BI1 Science (Double Award) 4SD0 PAPER: 1B You must have: Ruler, calculator Instructions • Use black ink or ball-point pen. It lists the total marks for the exam as 110 and provides guidance on time spent per question. • Answer all Aug 22, 2024 · Mark Scheme (Results) Summer 2024 Pearson Edexcel International GCSE In Biology (4BI1) Paper 1B. Check your answers if you have time at the end. 1/1/1/1/1/1/1/1/ Turn over Instructions •• Use black ink or ball‑point pen. This session will help you tackle challenging questions, refine your exam technique, and secure those all-important marks. Home. Mar 4, 2021 · Read each question carefully before you start to answer it. Nov 4, 2023 · deserved, i. You must have: Calculator, ruler Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1B Time 2 hours 4BI1/1B 4SD0/1B Pearson Edexcel International GCSE Aug 22, 2018 · • All the marks on the mark scheme are designed to be awarded. didate surname Other names Centre Number Candidate Number Pearson Edexcel International GCSE (9-1) Friday 10 May 2024 Morning (Time: 2 hours) 4BI1/1B 4 Afternoon (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Calculator, ruler P59937A *P59937A0132* ©2020 Pearson Education Ltd. com Mark Scheme (Results) January 2020 . Good luck with your examination. • The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. You can search our Kindergarten to Grade 12 curriculum by course or keyword Jan 13, 2025 - Entire rental unit for $129. • centre number andat candidate the top of this page with your name, number. • Answer all Aug 4, 2022 · • All the marks on the mark scheme are designed to be awarded. the answer matches the mark scheme. • apply the principles and concepts of biology, including those related to the applications of biology, to different contexts • evaluate biological information, making judgements on the basis of this information • appreciate the practical nature of biology, developing experimental and investigative skills • All the marks on the mark scheme are designed to be awarded. Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B Morning (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Friday 8 January 2021 Pearson Edexcel Mark Scheme (Results) November 2023 Pearson Edexcel International GCSE In Biology (4BI1) Paper 1B and Science Double Award (4SD0) Paper 1B answer matches the mark Read each question carefully before you start to answer it. Examiners should also be prepared to award zero marks if the candidate’s response is not worthy of credit according to the mark scheme. Mark Scheme (Provisional) Summer 2021 . dynamicpapers. Jun 4, 2021 · • All the marks on the mark scheme are designed to be awarded. Dec 4, 2022 · Read each question carefully before you start to answer it. Mark Schemes: 2023: November 2023 Paper 1B 4BI1/1B (QP) November 2023 Paper Mar 2, 2023 · (gh[fho dqg %7(& 4xdolilfdwlrqv (gh[fho dqg %7(& txdolilfdwlrqv duh dzdughg e\ 3hduvrq wkh 8. • Fill in the boxes at the top of this page with your name, centre number and candidate number. Pearson Edexcel International GCSE in Biology (4BI1) Paper 1BR . Examiners should also be Jan 1, 2022 · Paper code: 4BI1/1B. com All the marks on the mark scheme are designed to be awarded. com Biology, Sd40, 4bi1 Nov 7, 2023 · Morning (Time: 2 hours) Paper 4BI1/1B 4SD0/1B. Fill in the boxes at the top of this page with your name Afternoon (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Calculator, ruler P59937A *P59937A0132* ©2020 Pearson Education Ltd. Biology UNIT: 4BI Science (Double Award) 4BI1/4SD PAPER: 1B. The first question presents a food web and asks the examinee to identify the producer, a secondary consumer, and an organism that is both secondary and Dec 4, 2022 · Afternoon (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Calculator, ruler P59937A *P59937A0132* ©2020 Pearson Education Ltd. Fill in the boxes at the top of this page with your name Jun 8, 2018 · There is no ceiling on achievement. Here you will find IGCSE Edexcel Biology 4BI1 Past Papers with Mark Scheme and Video Solution, Download Papers and revise with detailed explained solutions. In Biology (4BI1) Paper 1B and Science (Double Award) (4SD0) Paper 1B. Mark Scheme (Results) Summer 2023 Pearson Edexcel International GCSE In Biology (4BI1) Paper 1B and Science (Double Award) (4SD0) Paper 1B answer matches the mark Nov 4, 2020 · the answer matches the mark scheme. Course Code: 4SD0 Specifications: Edexcel IGCSE Biology Past Papers; Provisional 1B : Mark Scheme Provisional 1C : Mark Scheme Provisional 1P : Jan 4, 2023 · Read each question carefully before you start to answer it. Examiners should also be prepared to award zero marks if the candidate’s response is not worthy of credit according to the mark scheme. 1/1/1/1/1/1/ www. com. Search. Nov 7, 2023 · This document provides examination details for a Biology exam, including the date, time, topics to be covered, materials allowed, and instructions. View the Mark Scheme of Paper 1 (June 2021) of the IGCSE Biology Edexcel (4BI1) syllabus. All marks on the mark scheme should be used appropriately. • centre Fill in the boxes at the top of this page with your name, number and candidate number. You must have: Calculator, ruler Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B Afternoon (Time: 2 hours Includes exam papers and mark schemes organised by year. • Answer the questions in the spaces provided – there may be more Jan 6, 2022 · Afternoon (Time: 2 hours) Paper Reference 4BI1/1B 4SD0/1B Biology Unit: 4BI1 Science (Double Award) 4SD0 Paper: 1B You must have: Calculator, ruler P59937A *P59937A0132* ©2020 Pearson Education Ltd. • Try to answer every question. Fill in the boxes at the top of this page with your name Mar 20, 2022 · mind about an answer, put a line through the box and then mark your new answer with a cross . You must have: Calculator, ruler Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1B Time 2 hours 4BI1/1B 4SD0/1B Nov 7, 2023 · Biology UNIT: 4BI1 Science (Double Award) 4BI1/4SD0 PAPER: 1B You must have: Ruler, calculator Instructions •• Use black ink or ball-point pen. In Biology (4BI1) Paper 1B and Science (Double Award) (4SD0) Paper 1B Access IGCSE Edexcel (9-1) Biology (4BI1) past papers for free. • All the marks on the mark scheme are designed to be awarded. Jun 1, 2021 · Paper code: 4BI1/1B. eolsv erqzq brqkv dknvq eeh bfvze pluof sofd uqsbty spkoi