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Biology




Photosynthesis

The light dependent stage takes place in the thylakoids.

There are two types of photophosphorylation- cyclic and non-cyclic.

Cyclic: uses only photosystem I where the excited e- pass continuously around the electron transport
chain producing ATP from ADP and Pi *on thylakoid membrane.

Non-Cyclic: uses both photosystems and…

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Biology




Faults of measuring the uptake of CO2 to give an indication of photosynthetic activity:

× Only presents Calvin's Cycle
× CO2 produced may be used up for Calvin's Cycle

Faults of measuring oxygen production to give an indication of photosynthetic activity:

× Some may be used up for respiration…

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