IB Biology HL C1.3.12 Hl Atp Production in Thylakoids Questions
Practise IB Biology HL 1.3.12 by applying atp production in thylakoids concepts to exam questions.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Explain how electron transfer and proton pumping create a high H⁺ concentration in the thylakoid space.
- Relate proton flow through ATP synthase to chemiosmosis, photophosphorylation and ATP formation in the thylakoid membrane.
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IB Biology HL C1.3.12 Hl Atp Production in Thylakoids Questions question 1
[Maximum number: 5]
A wide variety of organic compounds are used by living organisms.
Describe how ATP is produced by Photosystem II in the light-dependent stage of photosynthesis.
light (energy) absorbed by pigments/chlorophyll/photosystems;
excited electrons passed to electron carriers/electron transport chain;
protons/hydrogen ions pumped into thylakoid (space);
proton gradient/high proton concentration generated;
protons pass via ATP synthase to the stroma;
ATP synthase phosphorylates ADP/ATP synthase converts ADP to ATP;
photophosphorylation/chemiosmosis;
ATP synthase/electron carriers/proton pumps/photosystems/pigment are in the thylakoid membrane;
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