Photosynthesis

Created by: Kelsa
Created on: 09-01-13 16:51

Outline the Light Dependant Stage (From Chlorophyll to ETC)

Light energy is absorbed by P.S.2. This light energy excites the electrons in the chlorophyll moving them to a higher energy level. These electrons are then released from P.S.2 and accepted by the first electron acceptor.

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Outline what happens at the ETC

The electrons move down the ETC through a series of redox reactions. As the electrons move down the ETC they lose energy

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Desribe how ATP is made during the ETC

The loss of energy allows protons to move into the thylakoid so that the thylakoid has a higher concentration of protons than the stroma creating a proton gradient across the membrane. Protons move down the gradient into the stroma via ATPase.

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What is Photolysis?

Photolysis is the splitting of water producing H+ ions, oxygen and electrons. The electrons replace the electrons lost from P.S.2

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Describe the final stage of the Light Dependant reaction

Light energy is absorbed by P.S.1 again exciting electrons to a higher energy level. The electrons are accepted by NADP along with a H+ ion (from photolysis) forming NADPH

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Where does the Light Dependant Stage take place?

The thylakoid membranes

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What are the products of this stage?

NADPH and ATP

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Other cards in this set

Card 2

Front

Outline what happens at the ETC

Back

The electrons move down the ETC through a series of redox reactions. As the electrons move down the ETC they lose energy

Card 3

Front

Desribe how ATP is made during the ETC

Back

Card 4

Front

What is Photolysis?

Back

Card 5

Front

Describe the final stage of the Light Dependant reaction

Back

View more cards

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Photosynthesis