Do you study the AQA AS Biology course. Why not try the revision quizzes on my new AQA AS Biology page.
Use your student book to correct your answers and keep trying the quizzes everyday to improve.
Welcome to MrExham.com, an online blog designed for students, teachers and anyone who loves anything Biology!
The primary aim of my blog is to create an information resource for pupils studying Biology IGCSE, A Level and the International Baccalaureate (IB). I will also be regularly posting links to anything in the Biology world that I find interesting, be it news stories, articles, videos, or games, in the hope that Mr Exham will inspire YOU to Make Sense of Biology.
If you have any questions please email me.
I am pleased to announce that I have now completed a PowerPoint for every topic in the Edexcel IGCSE Biology Course. They can be conveniently downloaded in one file containing over 750 original slides.
Click on the image to download it now!
Over the next few months I will be checking the IGCSE pages and updating video links. I will then begin work on the new linear A Level for 2015.
Any feedback or requests for new resources please email me
I have been meaning to write this post for a while in order to let you know what the plans are going forward for mrexham.com, and this week seemed like as good a time as any with the GCSE results coming out and a new academic year starting.
Firstly I would like to thank everyone who has used the website in the last year, I have received some great emails and tweets and I am really glad that it’s been useful to so many people. I’ve now decided to take mrexham.com in a few different directions. Firstly I am making some of my key resources, which take the most time and effort to make, available to purchase through sellfy.com. This has meant spending more time on these resources to make them as clear and informative as possible, and it has also given me the impetus to make more of them! There will soon be a PowerPoint for each section of the IGCSE course along with revision quizzes.
I will continue to make free resources as well, including Quizlets, revision sheets, YouTube dissections, practical demonstrations, worksheets and I also intend to write Socrative quizzes for teachers.
Given that there will be a new A-Level starting in 2015 (read the Ofqual announcement here) I will no longer be adding to the current A-Level pages and resources. Instead I will focus on making new resources ready for the launch of the new linear A-Level next year. I will also be blogging about the various courses and exam boards offering Biology A-Level as my department make their decision about which to choose.
Thank you once again for all the positive feedback and please let me know if there’s anything else you’d like to see on mrexham.com!
Here is the latest revision quiz for A2 Biology. It covers Unit 2 Module 1 – Cellular Control and Variation. It does not have any detailed genetic problems or maths questions as it is purely meant to be for factual recall of the key words and definitions.
To celebrate Halloween why not enlighten yourself with some fun Biology Halloween trivia.
And finally, here’s a hilarious video from Steve Spangler conducting a simple halloween science experiment to make oozing pumpkins.
Recently in my department we have been using modelling clay to help animate complex biological processes that students find hard to visualise and learn. It’s very simple to do, all you need is some modelling clay, a smartphone or digital camera, some pens and paper and some basic video editing software like iMovie or Windows Movie Maker. To make the animations as smooth as possible the students should take as many still frames as they can. These are then put into the software and text, music and transitions are all added. It can be done in the class in small groups or for a homework task. Below are two examples of processes that this works particularly well for meiosis and protein synthesis.
Other biology topics that this technique would be useful for include: movement of substances across membranes, the nephron, genetic engineering of human insulin, action potentials, respiration, photosynthesis, enzymes and many more.
Tomorrow Mr Exham will be taking part in the Bang Goes The Borders Science Festival. It is a free event held at St. Mary’s School, Melrose between 10am and 4pm. There are all sorts of fantastic workshops and events taking place throughout the day. Leading Universities such as The University of Edinburgh, Newcastle University and Herriot-Watt are all taking part as well some of the leading schools from Scotland and the North of England such as Fettes College.
Mr Exham will be running four workshops throughout the day (10:45, 12:00, 14:00, 15:00) where you will be able to extract your own DNA from your cheek cells and put it into a wearable pendant. Click on the image below to view the Prezi that I will be using for my workshops.
For a list of all the events happening at Bang Goes The Borders click here, the first 500 children to visit the event will receive a free BGTB bag packed with science themed goodies! I will be tweeting pictures and updates live tomorrow from St. Mary’s.
Today in London the first ever lab-grown hamburger was cooked and eaten. Would you eat meat grown in a lab? Before you answer the question you should know more about how the burger was made and more importantly, why?
How the burger was made?
It was made by Professor Mark Post from Maastricht University in Holland using using stem cells taken from a dead cow. These are muscle specific stem cells that are then provided with nutrients so that they can divide over and over again by mitosis. The cells naturally come together to form small fibres called myotubes. These are electrically stimulated to make them contract and relax, this builds the muscle fibres just like going to the gym. They are then combined with fat grown in a lab and a few other additives such as beetroot for colour and then pressed into a burger. Therefore only a few cells are needed to make a whole burger, and potentially tons of meat.
Watch the video below to learn more about stem cells.
Why was the burger made?
Watch this video to see a nice summary of these issues.
What are the problems with lab-grown meat?
So now you know the details, have you made up your mind? If you’re still not sure watch this TED talk by Prof Mark Post and see if he can convince you.
Please comment below with your opinions on this amazing scientific development.
Plant reproduction is often seen as dull and boring compared to animal reproduction but it’s actually incredibly interesting. The lastest video to be uploaded to my YouTube channel shows me dissecting a flower to help you learn about it’s anatomy and how the two processes of pollination and fertilisation occur.
If you’d like to learn more about the life cycle of a plant including seed growth and dispersal, why don’t you click here and work your way through the great animations and activities available. You could also test your knowledge of flower anatomy by trying this quick quiz.
It’s important to remember that pollination is not just carried out by bees, watch this amazing video on YouTube about ‘The Beauty of Pollination’. There is some fantastic footage of insects and birds collecting pollen from anthers.
I know a lot of recent visitors to the website have enjoyed using Quizlet to help with their revision. For anyone who hasn’t used Quizlet before you can learn what it is, and how to use it, by clicking here. There are now two new quizes available to help you revise Food and Digestion, just click on the links below to access them:
For anyone studying this topic I’d recommend watching Hank Green’s YouTube video below. He will take you on a crash course through the bowels of the human digestive system and explain why it’s all about surface area!
Hank’s YouTube channel is a great resource for anyone studying Biology, it has 40 different videos covering topics such as photosynthesis, meiosis, natural selection and ecology. Why don’t you check it out!
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