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Photosystem and Light Dependent Reactions Quiz

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Photosystem and Light Dependent Reactions Quiz

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Questions and Answers

Where are photosystems located?

On the outside of the thylakoid membrane

Inside the thylakoid membrane (correct)

In the intermembrane space

In the light dependent reactions

What happens when a photosystem absorbs light energy?

The electrons become energised (correct)

The electrons are transferred to carrier molecules

ATP and NADPH are produced

The light independent reactions occur

What is the purpose of the light dependent reactions?

To generate energy for the light independent reactions (correct)

To absorb light energy

To produce ATP and NADPH

To transfer electrons to carrier molecules

What is the role of Photosystem I and II?

<p>To generate energy for the light independent reactions</p> Signup and view all the answers

Which of the following is NOT true about photosystems?

<p>They are used to generate energy for the light independent reactions</p> Signup and view all the answers

Study Notes

Photosystems are groups of photosynthetic pigments that are embedded within the thylakoid membrane.
When a photosystem absorbs light energy, delocalised electrons within the pigments become energised or ‘excited'.
These excited electrons are transferred to carrier molecules within the thylakoid membrane, and are used in the light dependent reactions.
The light dependent reactions occur within the intermembrane space of the thylakoids, and involve the production of ATP and NADPH.
The light dependent reactions are used to generate energy for the light independent reactions.
The light dependent reactions are carried out by Photosystem I and Photosystem II, and are dependent on the light that is absorbed.

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Description

Test your knowledge on photosystems, light absorption, and the light dependent reactions in photosynthesis. This quiz covers the transfer of energised electrons, ATP and NADPH production, and the role of Photosystem I and Photosystem II.