Chemiosmosis

NADP becomes reduced when it picks up the two protons that were released from water in which photosystem?

II

what does newly NADPH do?

carries hydrogen to the calvin cycle to make sugar in the light-independent reactions.

when protons flow across the membrane what is this called?

chemiosmosis.

what does the splitting of H2O do?

creates two H+ ions and by the b6-f complex pumping ions from the stroma back into the interior of the membrane.

when a photon of light is captured by the chlorophyll pigment what happens?

electrons are excited.

what happens to the electron after it is transferred to an acceptor molecule?

it moves down the photosynthetic membrane with a series of electron-carrier molecules.

what happens to the excited electron

it moves to a specialized chlorophyll called the reaction center.

what happens at the reaction center?

the excited electron gets transferred to an acceptor molecule.

what is chemiosmosis?

the movement of ions across a selectively permeable membrane, similar to osmosis of water.

there is a higher concentration of H+ ions in...

the thylakoids of chloroplasts

what happens to the H+ ions in the thylakoids of chloroplasts

they diffuse out of the cell through ATP synthesase sites.

what does ATP Synthesase sites do?

they use the kinetic energy to phosphorylate ADP into ATP.

how is higher concentration created?

when H2O splits in the thylakoid