light dependant reaction

Question 1

where does this reaction take place

Answer 1

in the thylakoid membranes of the chloroplasts

Question 2

what is the light absorbed by

Answer 2

by chlorophyll and other photosynthetic pigments in the photosystems

Question 3

what does the light energy do in the chlorophyll and what does this lead to

Answer 3

excites the electrons leading to their eventual release from the molecule, the chlorophyll has been ionised

Question 4

what is some of the energy from the released electrons used for and where do these products go

Answer 4

1) to add a phosphate group to ADP to form ATP. ATP transfers energy to light independant reaction
2) to form reduced NADP from NADP. reduced NADP transfers hydrogen to light independant reaction

Question 5

what is oxidised during the process

Answer 5

H2O is oxidised to O2

Question 6

what 3 things from the energy resulting from the photoionisation of chlorophyll used for

Answer 6

1) making ATP from ADP and an inorganic phosphate
2) making reduced NADP from NADP
3) splitting water into protons, electrons and oxygen (photolysis)