Could you please help me with the model answers for sand dune transect (student activity)?
Range of tolerance lab (2025)Amazing. Thanks!
Sustainability (2025)I noticed a typo in the fill in the blank. It should say 'hydrophobic" lipid tails inside the bilayer.
B2.1 Membrane & transport - reading taskDear Michelle, Thanks for your comment. Yes you are correct about the hierarchy of the labels. In simplifying the slide diagram the labels became unclear. In fact we could simplify more, as the label "Fascicle" is not required in the DP...
Contraction & relaxation of muscles (2025)Dear Kristaps and your students, Thanks so much for pointing out the imperfection in the slides. It shows how good your students are at critical thinking, and also how easy it is to make a slip with a codon base sequence. Transcribing into mRNA and...
Types of mutation (2025)Dear Nilan, Yes exactly that, DNA replication occurs during interphase. In the Bio guide D2.1 a clear distinction is made between nuclear division (mitosis/meiosis) and cell division / cytokinesis. In D2.1.13 & D2.1.14 (which...
Mock exam - paper 1a HL - Model answersDear Ashley, Thanks for your question. There are model answers for both the activities on the page "Receptors...
Receptors & binding sites (2025)Dear Carolina, I have posted the model answers into the navigation on this new section of the site. Thanks for pointing out that it wasn't visible. Best regards, David
Sustainability (2025)Where are the model answers for the worksheet in Activity 2?
Receptors & binding sites (2025)
Richard
Site authorKate Thanks for pointing this out
B2.1 Membrane & transport - reading task