ATL in Biology
Changes in the Biology Guide for first exams 2025 Free
If you are familiar with the DP Biology guide from 2014 for exams between 2016 and 2023 this page will be useful. When you fist look at the new guide the most striking change is the layout of the content....
Activities
Asexual & Sexual reproduction
This topic covers the processes of meiosis and fertilization in sexual reproduction. The alternative of asexual reproduction is compared with sexual reproduction and there are comparisons of male and...
eBook
A1.1 Water - exam practice
Using precise biological terms is essential for success in biology exams. Try the Exam question practice below. Topics: A1.1 WaterLevels: SL & HL - all students Number of flashcards: 19 Question 1: Draw...
Blog
A Biology Data book in 2028 ! Free
Th IB have just released a Biology Data book and an updated DP Biology Guide. No need to panic! The IB reassure us that only minor changes have been made to the guide, and most of these changes are additions...
Activities
Asexual and sexual - model answers
The document below shows suggested model answers to the questions for Activity 2 on this page Asexual & Sexual reproduction (2025) Please notes these are suggestions, there are other wordings which...
Activities
D1.3 Gene knockout & gene editing HL
One method to find out the functions of a genes is to change that gene in an organism and see what happens as a result. Geneticists have developed a library of ‘knockout organisms’ for this purpose and...
Activities
CRISPR Cas9 - Model answers
The document below shows some suggestions for answers to the Activity 2 questions worksheet CRISPR Cas9 Questions on the page D1.3 Gene knockout & gene editing HL Of course there are other possible...
eBook
D3.3 Homeostasis - 5 essential revision points
This is a '5 Essentials' revision (or review) sheet for Topic D3.3 Homeostasis. A tool for actively reviewing knowledge and understanding - short and sweet. SL and HL - The white boxes include details...
eBook
D2.1 Cell division - 5 essential revision points
This is a '5 Essentials' revision (or review) sheet for Topic D2.1 Cell and nuclear division. A tool for actively reviewing knowledge and understanding - short and sweet. SL and HL - The white boxes...
Review/revision
40 revision sheets "5 essentials"
All forty DP Biology topics are shown in this table. (final few pages coming soon) There is a revision sheet for each topic and a tricky conceptual question. These are aimed at students who have limited...