ATL in Biology
Genetic modification 3.5
This is a quiz of multiple choice style questions about the genetic modfication topic 3.5 They are self-marking questions, so you can click on 'check' to see whether you have the answer correct. Each...
ATL in Biology
Experiments on Transpiration.
What makes a good experiment? How can you estimate the uncertainty of any apparatus? What would the units be of the "Rate of transpiration" Carry out the activities on the Simple transpiration experiments...
ATL in Biology
Chromosomes - Planning sheet 3.2
Planning sheet for chromosomes 3.2 Understanding(s) Chromosomes genes & alleles Karyograms and non-disjunction Essential Question(s) TOK / Nature of Science / IM Skills students will have: Chromosomes...
ATL in Biology
Acetylcholine - what if? Model answers
Please remember that these are 'model answers' and many other wordings are possible. Teachers can control access to this page using the Student access section of the site. Acetylcholine - What if? - model...
ATL in Biology
Activity 2 - Overproduction model answers
Overproduction of offspring Mosquitoes lay their eggs in wet mud or water often by ‘dabbing’ – flying low over the water and bobbing down to the surface to lay eggs one at a time. Females can lay up to...
ATL in Biology
Classification IB style qns -model answers
Fleas are a type of wingless insect which feed of the blood of their hosts using a tube which pieres the skin. They are classified in the order “Siphonaptera” (Siphon – tube, a-ptera – wingless) Flea...
ATL in Biology
Diabetes IB Style question - model answer
This is a suggested model answer for the question on diabetes. Distinguish between type I and type II diabetes with respect to their cause, effects and treatment. (3 marks) Model answer Distinguish between...
ATL in Biology
Neurones & synapses - planning 6.5
Planning sheet for neurones and synapses Understanding(s): Nerve impulses. Synapses. Essential Question(s) Name three different roles of integral proteins in cell membranes. How can integral proteins...
ATL in Biology
Hormones introduction
Students are introduced to hormones in this lesson using three examples, leptin, thyroxin and melatonin. These examples clearly illustrate the nature of hormones and ideas about homeostasis. After some...
ATL in Biology
Animal physiology - test HL - mark scheme
This is the mark scheme for the Animal physiology test I Attenuated microbes II Antigen molecules from a pathogen III A harmless pathogen that challenges the immune system A I only B I and II only C...