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Internal Assessment - latest guidance Free
The 2016 examiners' report has just been released on the OCC. Are there changes or new instructions for the Internal Assessment? This blog post sumarises the main points to save you time. Of course there...
ATL in Biology
Model answers - further genetics qns on co-dominant and multiple alleles.
Model answers for the activity on the worksheet below. Further genetics questions on co-dominant and multiple alleles can be found on this page. See the pdf file below. Model answers - further genetics...
ATL in Biology
Model answers: Co-dominance & Multiple Alleles
How many different alleles are there in the six genotypes? Three Which are the alleles in human blood groups which show co-dominance? IA and IB Suppose that Adam was heterozygous for blood group...
ATL in Biology
Multiple choice sex linkage questions model answers
Model answers for the genetics questions - note the slight clarifications. Model answers to genetics questions...
ATL in Biology
Carbon dioxide and Bohr shift
These lesson activities give students an understanding of the different methods of transporting carbon dioxide in the blood, the role of hemoglobin, the enzyme carbonic anhydrase and the Bohr shift. A...
ATL in Biology
Respiratory gases - planning sheet HL D.6
Planning sheet for D.6 Transport of respiratory gases Understanding(s): Oxygen dissociation curves Carbon dioxide and bohr shift Essential Question(s) TOK / Nature of Science / IM Skills students will...
ATL in Biology
Altitude & CO2 transport IB style questions - model answers
1) Why is it useful to record the age and weight of the subjects? This information will help to control the possible effects of age and weight on the experimental variables. 2) Identify the altitude with...
ATL in Biology
Oxygen dissociation curves
Oxygen dissociation curves show the affinity of hemoglobin for oxygen but they are not easy to understand. This activity provides resources for students to become familiar with partial pressures of oxygen...
ATL in Biology
Enzymes worksheet model answers
Questions 1. What is an enzyme? Enzymes are proteins which work as biological catalysts. 2. Define the active site? Site of an enzyme to which specific substrates bind ……………………………………………………………………………………………………………………………………………………………....
ATL in Biology
Sensory receptors and smell
In this activity students look first at the way that the sense of smell connects to the brain and how these impulses from the olfactory membrane can provoke strong emotional memories. In a second activity...