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Every cell in our body, whether it's a bacterial cell or a human cell, has a genome. You can extract that genome - it's kind of like a linear tape - and you can read it by a variety of methods. Similarly, like a string of letters that you can read, you can also change it. You can write, you can edit it, and then you can put it back in the cell
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5 Oct 2026
Richard Scarr
It is with great sadness that we have to announce the passing of Richard Scarr. He was always an enthusiastic biologist and a dedicated educator. After reading Biology at Kings College in London he taught...
12 Aug 2026
Exam practice questions
Over the summer we have completed a full set of exam practice question pages, one for each topic. These pages are great for homework or revision. The Exam practice concept; The pages all have “exam practice”...
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See all"These Inthinking Biology activities are excellent! I was looking for something to break the monotony of a cells lesson so I tried the Cell types detective activity. Students loved it. Both the situation and the examples were brilliant"
Amit Khanna
Jakarta Intercultural School
"This site provides interesting and comprehensive teaching material which matches the IB standards of learning ."
Tishya Ghosh
SILVER OAKS INTERNATIONAL SCHOOL Sarjapur Bengaluru India
Subscriber comments
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Dear Sarah, The IB's teachers' support material on myIB has a range of IA's with moderators comments and marks. There are some without annotations, that you could use like this with students.Best wishes, David
The Investigation -
Good afternoon David. I am saddened to hear this. Richard has been my mentor since i met him during a workshop in Mombasa. All I can say is May he rest in peace. I will miss him
Richard Scarr -
Hi Susan, This page has been updated to include the new questions about spiders. Best wishes, David
Overproduction - model answers
Kirsten
Very sorry to hear this - I enjoyed several Bio thinkins with Richard leading.
Richard Scarr