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.
I hope to complete the IGCSE section of the course over the next few months. As A Levels will be changing soon I will only put basic information on these pages until the new course has been approved.
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!
The last three revision tests for IGCSE have now been uploaded to the IGCSE revision page. Download them from SlideShare, complete them, use the textbook to mark them, write out anything you get wrong on the revision tracker, and then repeat the test every couple of days until you are getting close to full marks!
Click here to find a test for Section A: Organisms and Life Processes.
Click here to find a test for Section E: Variation and Selection
Click here to find a test for Section F: Microorganisms and Genetic Engineering
As always these tests have been created using the relevant textbooks so the answers should be easy to find. However, if you’d like the answers for any of the tests available on mrexham.com just send me an email.
Bored of making flash cards? Tired of writing out notes? Why not try mind mapping? There are many reasons why drawing a mind map can be a useful way to learn. Just look at this list of the top 100 reasons to mind map compiled by mind mapping guru Paul Foreman. Paul has made a great mind map to give you some help getting started. You can also see more of Paul’s mind maps by visiting his website: http://www.mindmapinspiration.co.uk/#.
Why not choose a topic for yourself and see if you can make a mind map using all the key terms, you could even add some diagrams as well. Alternatively, if you want to do a mind map on the computer there is plenty of mind mapping software available, but a good free one is FreeMind. You can watch this YouTube tutorial to help you get to grips with the FreeMind software.
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