ATL in Biology
Antigens and antibodies model answers
This page shows suggestions of model answers for the Explaining antibody production activity; lymphocyte activity sheet on the SL activities page Antigens and antibodies These are suggestions, not a mark...
ATL in Biology
Sickle Cell Haemoglobin - Activity model answers
This page shows suggestions of model answers for the activity; Sickle Cell base substitution activity on the SL activities page Base substitution mutation. These are suggestions, not a mark scheme and...
ATL in Biology
Visualising molecules model answers
Access to this page is filtered for students. Teachers can control whether their students can see it in the Student Access section. This page shows suggestions of model answers for the Visualising molecules...
ATL in Biology
Carbon based IB style qns - Model answers
The document below shows some suggestions for answers to the questions IB Style Questions on carbon based compounds on the page Carbon based compounds. Of course there are other possible answers and...
ATL in Biology
HL Respiration introduction
Students are introduced to four important reaction types found in respiration; oxidation, reduction, phosphorylation and decarboxylation. There is a short presentation which helps to explain each reaction...
ATL in Biology
Pregnancy and birth
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...
Assessment - introduction
IA avoiding common errors - model answers
This page shows suggestions of model answers for the activities on the page IA - Avoiding common errors These are suggestions, not a mark scheme and many other wordings are also correct answers.Time...
ATL in Biology
Endosymbiosis - Nature of Science Free
The idea that mitochondria once existed as free living bacteria and that a simple cell engulfed one of these bacterial cells and promptly became a eukaryote cell is a difficult idea to ‘prove’. The fact...
ATL in Biology
Topic 7 - Nucleic acids HL revision list
This pages gives outline details of the content of the topic together with essential questions and student skills and applications. Helpful for revision. DNA structure Essential Questions DNA replication...
ATL in Biology
Inheritance 3.4
This is a quiz of multiple choice style questions about the inheritance topic 3.4 They are self-marking questions, so you can click on 'check' to see whether you have the answer correct. Each question...