A Level Biology Revision "The Cell Wall"

A Level Biology Revision "The Cell Wall"

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In this video, we look at the cell walls found in plant cells, algae and in fungi. First we explore the cellulose cell wall in plant cells. We look at the properties of the cellulose cell wall and then link these to the structure of cellulose. We then look at the cell walls in algae and fungi. This video is aimed at the UK A Level Biology specifications. Students studying International A Level Biology will need to check their specification. Image Credits: Wilting plant https://commons.wikimedia.org/wiki/File:Photo-of-a-real-wilting-cucumber-in-greenhouse.jpg Shenglian Lu, Chunjiang Zhao, Xinyu Guo, CC BY 4.0 https://creativecommons.org/licenses/by/4.0, via Wikimedia Commons Cellulose structure (image resized, cropped and rearranged by S. Donnelly) https://commons.wikimedia.org/wiki/File:Cellulose_structure.png Eunice Laurent, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons Middle Lamella (image resized, cropped and rearranged by S. Donnelly) https://commons.wikimedia.org/wiki/File:Fig-9-Ultrastructure-of-compound-middle-lamellae-CML-in-birch-sclereids-after-staining-with-KMnO-4.jpg Jong Sik Kim, Geoffrey Daniel, CC BY 4.0 https://creativecommons.org/licenses/by/4.0, via Wikimedia Commons Seaweed https://commons.wikimedia.org/wiki/File:Seaweed_-_geograph.org.uk_-_2549914.jpg Seaweed by�Mick Garratt, CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons Fungi https://commons.wikimedia.org/wiki/File:Habichtspilz-Sarcodon-imbricatus.jpg Holger Krisp, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons

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5 years if sir wasn’t enough
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The best science revising channel ever, I prepared for my IGCSEs watching your videos and learned topics my teachers didn't teach me. ❤😊
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This guy carried me especially for physics paper 2 and chemistry paper 2
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Hi Sir, I absolutely love your videos and thanks to you I've aced my science GCSE exams, however I was wondering if you could start posting A levels Physics AQA since I'm going to do that for A levels and in order for me to pass, I need your help, without you I just know for a fact I'll fail
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Really useful video! Also do we need to calculate hydrostatic pressure? My teacher says yes but i checked the specification and it says nothing about it
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Hi Sir, I have finished all my science GCSE exams. Thank you for making these videos as they have helped me all the way through from year 10 to year 11. I knew nothing when I was in year 10, when I found out your videos I wrote down notes and understood the content, did practise questions and improved my grades. Very useful videos and i’ll be continue watching your videos on A level chemistry. 💗💗💗
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Do all these videos of he's work for a level biology in Ocr?
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Just finished my gcses. Time to get ahead of the competition
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Thx for helping me during the gcses
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Thank you for the video 🫡
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Great for revision
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you’ve never changed appearance it’s been like 6yrs 😅😭
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THANKS

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