IB DP Biology Higher Level (2023 syllabus) · IB ib-bio-hl
C Interaction and interdependence
Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).
Practice questions on Interaction and interdependence
- Explain how covalent modification of an enzyme can regulate its activity, using phosphoryl… (4 marks, Explain)
- Explain how the nervous system and endocrine system work together to maintain blood glucos… (4 marks, Explain)
- Explain how detritivores and decomposers contribute to the cycling of matter in an ecosyst… (4 marks, Explain)
- Explain how predator–prey interactions can produce cyclical fluctuations in the population… (4 marks, Explain)
- Explain how interspecific competition between two species occupying similar niches can lea… (4 marks, Explain)
- Explain how the structure of an antibody enables it to neutralise a specific pathogen. (4 marks, Explain)
- Explain how the nervous system and the endocrine system are integrated during the fight-or… (4 marks, Explain)
- Explain how the nervous system and the endocrine system are integrated in the regulation o… (4 marks, Explain)
- Explain how changes in membrane permeability to sodium and potassium ions bring about depo… (4 marks, Explain)
- Explain how the structure of a myelinated motor neurone allows for rapid transmission of n… (4 marks, Explain)
- Explain how down-regulation of receptors allows a target cell to reduce its sensitivity to… (4 marks, Explain)
- Explain how acetyl-CoA links the products of glycolysis to the Krebs cycle, including the … (4 marks, Explain)
- Explain how changes in pH affect the rate of an enzyme-catalysed reaction, with reference … (4 marks, Explain)
- Explain how immobilised enzymes differ from free enzymes in their properties and describe … (4 marks, Explain)
- Explain how end-product inhibition allows a cell to regulate the rate of a metabolic pathw… (4 marks, Explain)
- Explain why lactate fermentation allows glycolysis to continue during intense exercise des… (4 marks, Explain)
- Explain how the induced fit model of enzyme action differs from the lock-and-key model, an… (4 marks, Explain)
- Explain how the structure of the inner mitochondrial membrane is adapted to maximise the e… (4 marks, Explain)
- Explain how oxygen acts as the final electron acceptor in aerobic cell respiration and why… (4 marks, Explain)
- Explain how the chemiosmotic theory accounts for ATP synthesis during aerobic cell respira… (4 marks, Explain)
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