8.3 Vocabulary Quiz Flashcards
ATP
a nucleotide triphosphate that is a common source of energy in cells
ATP synthase
an enzyme that utilizes the H+ electrochemical gradient to synthesize ATP
Electron Transport Chain
a group of proteins that accept and donate e- in a series
Light-dependent Reactions
the reactions within photosynthesis that use light to generate ATP and reduced NADP
oxidation
the loss of e- or hydrogen
phosphorylation
the addition of a phosphate group to a molecule
photoactivation
the production of energetic electrons in reaction centers through the absoprtion of light
photolysis
the splitting of water
photophosphorylation
the production of ATP using the energy of sunlight
Photosystem 1
an integral protein transport system used in the light dependent reactions- it can carryout cyclic photophosphorylation, and produces reduced NADP
Photosystem 2
the first photosystem in the light dependent reactions - it uses electrons from photolysis, and produces ATP
Proton gradient
a difference in proton concentration on either side of a membrane
Reduced NADP
produced by photosystem 1, it is an energy source for the Calvin cycle
reduction
the gain of e- or hydrogen
stroma
the chemical medium between the inner chloroplast membrane and the thylakoid membrane
