Activities
Pregnancy and birth (2025)
Students study simply how the hormone HCG stimulates the ovary to secrete progesterone during early pregnancy. Once the embryo is implanted, its placenta facilitates the exchange of materials between...
Activities
Pregnancy IB style qns - model answers (copy)
Use the diagram to help answer the following questions. Positive feedback is very important during the process of birth. Positive feedback occurs when the response to a stimulus increases the stimulus....
Activities
Pregnancy IB style questions model answers (copy)
Magali in the photo above has just received an email from the blood testing lab showing the results of a recent blood test. Use this diagram to help you answer questions 1 & 2. Questions 4 to 5 refer...
eBook
D3.1 Reproduction - student friendly summary
Blue text shows extra clarification or guidance. Guiding questions SL and HL D3.1.1 - Differences between sexual and asexual reproduction.Relative advantages: asexual reproduction to produce genetically...
Activities
Pathogens & the first line of defense - model answers
These are suggested model answers for the activity Blood clotting SOLO activity As model answers they don't cover all the possible options for correct responses, but they provide a very good guide for...
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August Update 2024 Free
We strive to help you and your students to succeed. We already have over 150 Lesson activity pages designed specifically for the DP Biology course and there are written tests and sets of model answers...
eBook
D2.2 Gene expression - student friendly summary
Blue text shows extra clarification or guidance. Guiding questions SL and HL There is No SL content in this topic Additional Higher level D2.2.1 - Gene expression is the mechanism by which information...
Activities
Methylation (2025)
This lesson begins with sides outlining the control of gene expression by methylation of nucleosomes and DNA. A data analysis question requires students to analyse and explain methylation patterns in...
Activities
Methylation data question - model answers (copy)
Methylation of DNA is an important epigenetic process involved in the control of cells, such as in cell development and cell differentiation. DNA methylation has also been reported to play a major role...
eBook
A2.2 Cell structure - student friendly summary
This is a 'student friendly' summary list of the details in the IB DP Biology Guide for A2.2 Cell structure, all about cell structure Guiding questions SL and HL A2.2.1—Cells are the basic structural...