Light Dependent Reaction

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Slide 1

Light Dependent Reaction

Objectives

Understanding the processes of photoionisation, photophosphorylation & photolysis.

Knowledge of where these processes take place.

Knowledge of the difference between cyclic & non-cyclic phosphorylation.

Slide 2

Overview of photosynthesis

Slide 3

Overview of photosynthesis

Slide 4

Photosystems

Slide 5

Photosystems

Slide 6

Electron Transfer

Slide 7

Electron Transfer

Slide 8

Electron Transfer

The energy changes of electrons as they flow through the light reactions are analogous to the cartoon.

As complicated as the scheme is, don’t lose track of its functions:

The light reactions use solar power to generate ATP and NADPH which provide chemical energy and reducing power to the sugar making reactions.