Photosynthesis Stage 1

Question 1

Stage 1 known as

Answer 1

Light reactions

Question 2

Overview of stage 1

Answer 2

Light is captured by photosynthetic pigments creating energy
This energy is used for the production of ATP from ADP and Pi and the photolysis of water
The ATP synthesised will move onto the carbon fixation stage.
The water will be split by photolysis into Oxygen and Hydrogen
The Oxygen will be released into the air
The hydrogen will be accepted by NADP forming NADPH and move into the carbon fixation stage

Question 3

Production of ATP by light

Photophosphorylation

Answer 3

The light energy captured and absorbed by the chlorophyll and will excite electrons in the pigment molecules.
These high energy electrons will be captured by the primary electron acceptor and transferred along an electron transport chain (series of proteins in the membrane)
This transfer of high energy electrons in the chain releases energy to generate ATP by the enzyme ATP synthase

Question 4

What is the energy captured from light energy used for aside from photophosphorylation

Answer 4

Photolysis