[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-208025-en":3,"doc-seo-208025-105":30,"detail-sidebar-cat-0-en-105":82},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":4,"is_deleted":4,"is_public":20,"is_downloadable":20,"audit_status":20,"page_count":21,"language":22,"language_code":23,"site_id":24,"html_lang":23,"table_of_contents":25,"faqs":26,"seo_title":27,"seo_description":14,"update_tm":28,"read_time":29},208025,687197100911,"Himbo","https://ap-avatar.wpscdn.com/avatar/a000239b6f1da00475?x-image-process=image/resize,m_fixed,w_180,h_180&k=1785132997149421697",4,"Exam","Biology Questions for CCEA GCSE - Mark Scheme - Unit 1 Answers","CCEA GCSE Biology mark scheme answers for Unit 1: Cells, Living Processes and Biodiversity, covering core assessment points for cell structure, microscopy techniques, cell respiration, cell types and the impact of stem cell applications, as well as calculations for size, surface area to volume ratio and related quantitative reasoning. Includes mark allocations and structured responses for sub-questions, plus supporting guidance for practical observations and interpretation of results within the Biology Questions for CCEA GCSE framework.","James Napier  \nCCEA GCSE  \nBIOLOGY QUESTIONS  \nMARK SCHEME  \nThis mark scheme is for use in conjunction with the book Biology Questions for CCEA GCSE,  \nISBN: 978 1 78073 188 9  \nColourpoint Educational  \nAn imprint of Colourpoint Creative Ltd Colourpoint House  \nJubilee Business Park  \n21 Jubilee Road Newtownards County Down Northern Ireland BT23 4YH  \nTel: 028 9182 0505  \nE-mail: [sales@colourpoint.co.uk](sales@colourpoint.co.uk)  \n[Web site: www.colourpoint.co.uk](Web site: www.colourpoint.co.uk)  \n©2023 James Napier and Colourpoint Creative Ltd All rights reserved.  \nThis material is provided solely for use with the accompanying textbook. Unauthorised reproduction, in whole or part, without prior written permission from the publisher is prohibited.  \nPublisher’s Note: These answers been written to help students preparing for the GCSE Biology specification from CCEA, and the Biology units of the GCSE Double Award Science specification. While Colourpoint Educational and the author have taken every care in its production, weare not able to guarantee that it is completely error-free. Additionally, while the mark scheme has been written to closely match the CCEA specification, it is the responsibility of each candidate to satisfy themselves that they have fully met the requirements of the CCEA specification prior to sitting an exam set by that body. For this reason, and because specifications change with time, we strongly advise every candidate to avail of a qualified teacher and to check the contents of the most recent specification for themselves prior to the exam . Colourpoint Creative Ltd therefore cannot be held responsible for any errors oromissions in this mark scheme or any consequences thereof.  \nv1  \nUnit 1:  \nCells, Living Processes and Biodiversity  \nAnswers  \n1.1 CELLS  \n1 . 1 Cells  \n1. (a) Cell membrane;  \ncytoplasm; [2]  \n(b) Any two from:  \n• cellulose cell wall  \n• chloroplasts  \n• (large permanent) vacuole [2][4]  \n2. (a) (i) X – cell wall;  \nY – cytoplasm;  \nZ –(large permanent) vacuole; [3](ii) Cytoplasm/Y; [1]  \n(b) (i) Cytoplasm; [1]  \n(ii) Cell respiration; [1]  \n(c) Non-cellulose cell wall;  \nplasmids; [2][8]  \n3. Peel a section of onion epidermal tissue and add to a microscope slide; add water;  \nlower a coverslip onto the epidermal tissue;  \ncarefully to avoid air bubbles; [4][4]  \n4.  \n\n| Unit | Number in one metre | Standard form | Symbol |\n| --- | --- | --- | --- |\n| millimetre; |  |  | mm; |\n|  | 1 000 000; | 10–6; |  |\n\n[4]  \n5. (a) 40 (mm) ÷ 400;  \n0.1 mm; [2]  \n(b) 70 000 (µm) ÷ 140;  \n500; [2][4]  \n6. (a) 20 (mm) ÷ 0 . 1;  \n200; [2]  \n(b) 40 (mm) ÷ 200;  \n0.2 mm; [2][4]  \n 1   \n1.1 CELLS  \n7. The ability to see separate parts (of the specimen) as distinct/separate points (when viewed); [1]  \n8. (a) Embryonic;  \nadult; [2]  \n(b) Stem/shoot or root apices/tips; [1][3]  \n9. Any two from:  \n• transfer of viruses/diseases  \n• formation of tumours  \n• development of unwanted cell types [2]  \n10. (a)  \n\n| Side length / cm | Area / cm2 | Volume / cm3 | Surface area to volume ratio |\n| --- | --- | --- | --- |\n| 1 |  |  |  |\n| 2 |  |  |  |\n| 3 | 54; |  |  |\n| 4 |  | 64; |  |\n| 5 |  |  | 1.2; |\n\n[3]  \n(b) As the volume increases the surface area to volume ratio decreases; [1]  \n(c) To increase the overall area of (gas) exchange surfaces;  \nto compensate for the reduced surface area to volume ratio in large multicellular animals;  \nfor the diffusion of respiratory gases/oxygen/carbon dioxide; [3][7]  \n 2   \n1.2 PHOTOSYNTHESIS AND PLANTS  \n1.2 Photosynthesis and Plants  \n1. Light;  \nchlorophyll; [2][2]  \n2. (a) Carbon dioxide and water; 􀃆 glucose and oxygen; [2]  \n(b) 6CO2 + 6H2O 􀃆 C6 H12O6 + 6O2  \n[one mark for symbols; one mark for balancing][2][4]  \n3. (a) (i) D-C-A-B; [1]  \n(ii) Removes the chlorophyll; [1]  \n(b) (Iodine will change from) yellow-brown;  \nto blue-black; [2][4]  \n4. (a) (i) Place in a dark area for 48 hours (or other appropriate length of time); [1](ii) (Removes starch already present in","cbCailBf9lDQKeft","https://ap.wps.com/l/cbCailBf9lDQKeft","pdf",440460,1,37,"English","en",105,"# Unit 1: Cells, Living Processes and Biodiversity\n## Cells\n## Photosynthesis and Plants","[{\"question\":\"What does the mark scheme include for quantitative reasoning on surface area to volume ratio?\",\"answer\":\"It gives table-based answers and includes a reasoning statement for how the surface area to volume ratio changes as volume increases, plus marks for explaining the implications.\"}]","Biology Questions for CCEA GCSE - Mark Scheme - Unit 1 Answers | PDF",1788602206,93,{"code":4,"msg":31,"data":32},"ok",{"site_id":24,"language":23,"slug":33,"title":13,"keywords":34,"description":14,"schema_data":35,"social_meta":77,"head_meta":79,"extra_data":81,"updated_unix":28},"biology-questions-for-ccea-gcse-mark-scheme-unit-1-answers","",{"@graph":36,"@context":76},[37,53,67],{"@type":38,"itemListElement":39},"BreadcrumbList",[40,44,48,51],{"item":41,"name":42,"@type":43,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":45,"name":46,"@type":43,"position":47},"https://docshare.wps.com/document/","Document",2,{"item":49,"name":12,"@type":43,"position":50},"https://docshare.wps.com/document/exam/",3,{"item":52,"name":13,"@type":43,"position":11},"https://docshare.wps.com/document/biology-questions-for-ccea-gcse-mark-scheme-unit-1-answers/208025/",{"url":52,"name":13,"@type":54,"author":55,"headline":13,"publisher":57,"fileFormat":60,"inLanguage":23,"description":14,"dateModified":61,"datePublished":61,"encodingFormat":60,"isAccessibleForFree":62,"interactionStatistic":63},"DigitalDocument",{"name":9,"@type":56},"Person",{"url":41,"name":58,"@type":59},"DocShare","Organization","application/pdf","2026-09-05",true,{"@type":64,"interactionType":65,"userInteractionCount":4},"InteractionCounter",{"@type":66},"ViewAction",{"@type":68,"mainEntity":69},"FAQPage",[70],{"name":71,"@type":72,"acceptedAnswer":73},"What does the mark scheme include for quantitative reasoning on surface area to volume ratio?","Question",{"text":74,"@type":75},"It gives table-based answers and includes a reasoning statement for how the surface area to volume ratio changes as volume increases, plus marks for explaining the implications.","Answer","https://schema.org",{"og:url":52,"og:type":78,"og:title":13,"og:site_name":58,"og:description":14},"article",{"robots":80,"canonical":52},"index,follow",{"doc_id":7,"site_id":24},{"code":4,"msg":5,"data":83},[84,88,92,95,100,105,110,115,120,123,127],{"id":20,"doc_module":4,"doc_module_name":46,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":47,"doc_module":4,"doc_module_name":46,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":11,"doc_module":4,"doc_module_name":46,"category_name":12,"show_sort_weight":93,"slug":94},70,"exam",{"id":96,"doc_module":4,"doc_module_name":46,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":46,"category_name":102,"show_sort_weight":103,"slug":104},6,"Technology",50,"technology",{"id":106,"doc_module":4,"doc_module_name":46,"category_name":107,"show_sort_weight":108,"slug":109},7,"Healthcare",40,"healthcare",{"id":111,"doc_module":4,"doc_module_name":46,"category_name":112,"show_sort_weight":113,"slug":114},8,"Research & Report",30,"research-report",{"id":116,"doc_module":4,"doc_module_name":46,"category_name":117,"show_sort_weight":118,"slug":119},9,"Religion & Spirituality",20,"religion-spirituality",{"id":118,"doc_module":4,"doc_module_name":46,"category_name":121,"show_sort_weight":118,"slug":122},"World Cup","world-cup",{"id":124,"doc_module":4,"doc_module_name":46,"category_name":125,"show_sort_weight":124,"slug":126},10,"Lifestyle","lifestyle",{"id":128,"doc_module":4,"doc_module_name":46,"category_name":129,"show_sort_weight":96,"slug":130},19,"General","general"]