ATL in Biology
Extracting DNA Experiment.
DNA (Deoxyribonucleic acid) is the genetic material of all organisms, DNA is universal. We find the same genes performing the same functions in all species living on Earth. Since all living things contain...
Activities
RNA and DNA Structure (2025)
Students learn how to draw the chemical structure of nucleotides of DNA and RNA using simple shapes. They learn about the four bases in DNA and how they pair together in antiparallel strands. The differences...
Activities
RNA and DNA nucleotides - model answers
The document below shows model answers to the questions on the Questions about RNA and DNA nucleotides found on the page RNA and DNA Structure (2025) Teachers can control access to these answers in the...
Activities
Drawing RNA and DNA structure - model answers
The document below shows model answers to the questions on the Drawing RNA and DNA molecules student worksheet found on the page RNA and DNA Structure (2025) Teachers can control access to these answers...
ATL in Biology
Beta zone
Occasionally new ideas are posted here before they go to the main site. Take a look around if you wish, and please add comments to any pages if you would like to suggest an idea. During the induction...
ATL in Biology
A familiar teaching pathway in 6 topics
This is an idea for a pathway in six "units" with titles similar to the current guide. There is some logic to this pathway, it would certainly keep things familiar. One disadvantage might be the length...
ATL in Biology
A familiar pathway in 8 topics
This is an idea for a pathway in eight "units" with titles similar to the current guide. This pathway would still keep things familiar. It might be a good starting point if you plan on using the 'old'...
Review/revision
InThinking Question bank
Do you want to make a quiz or a test using questions just like IB past paper question, but which haven't been shared on the internet. InThinking Biology site has a huge bank of questions classified into...
Activities
Read about water from asteroids Free
Oceans cover more than 70% of the Earth’s surface, and scientists argue that the planet’s interior also contains a lot of water. But where did all this water come from? My postdoc Ziliang Jin and I analyzed...
ATL in Biology
Theme D - Continuity and change
This page could be displayed as a prompt to begin exploring connections that illustrate the theme. Click the graphic to enlarge. D - Continuity and change The genes passed from generation to generation...