Welcome to the Quiz!
This quiz contains 13 questions from a mix of 1 subtopics.
What happens to electrons in pigments when they absorb light energy?
they are reduced
they are excited
they are lost
they are oxidised
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What is the process of splitting water into electrons, protons, and oxygen called?
chemiosmosis
photophosphorylation
photoionisation
photolysis
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What is the movement of protons through ATP synthase called?
photolysis
photophosphorylation
photoionisation
chemiosmosis
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What is the term for the production of ATP using the energy from the movement of protons through ATP synthase?
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Describe the key stages of the light-dependent reaction.
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Which of the following is NOT a key stage in non-cyclic photophosphorylation?
photolysis of water
absorption of light energy by pigments
reduction of carbon dioxide
electron transfer along the electron transport chain
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Where do the electrons from the photolysis of water go?
they replace electrons lost from PSII
they oxidise NADP
they are used to produce ATP
they replace electrons lost from PSI
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What is the by-product of non-cyclic photophosphorylation?
glucose
water
carbon dioxide
oxygen
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Where are protons actively pumped across the thylakoid membrane into during non-cyclic photophosphorylation?
intermembrane space
stroma
thylakoid space
matrix
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Which photosystem is involved in cyclic photophosphorylation?
photosystem I (PSI) only
photosystem II (PSII) only
both PSI and PSII
neither PSI nor PSII
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What happens to electrons in cyclic photophosphorylation after they are passed along the electron transport chain?
they are returned to PSI
they reduce NADP
they are used to produce oxygen
they are lost from the system
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Which of the following is produced in cyclic photophosphorylation?
reduced NADP
oxygen
carbon dioxide
ATP
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What is the process by which ATP is formed using light energy?
photoionisation
photophosphorylation
chemiosmosis
photolysis
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