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light energy converted to chemical bond energy and carbon fixed as organic compound; CO2 water and light make glucose water and oxygen

light dependent reactions

use light to make ATP and power light independent

light independent reactions

calvin cycle which produces sugar

photosynthetic pigments

different types absorb different wavelengths of light incoming to the cell


pancake stacks in chloroplast where light reactions occur


space inside chloroplast where light independent reactions occur


pancakes where photosystems I and II are


light harvesting centers in thykaloids

noncyclic photophosphorylation

one type of light reaction; ATP and NADPH are formed; light goes to PSII (P680) and releases oxygen by splitting water, ATP is produced; energy absorbed by PHI(P700) and NADPH produced for Calvin cycle

cyclic photophosphorylation

only produces ATP (not oxygen or NADPH) electrons transported in cycle from P680 to P700 and then back again

calvin cycle

light independent; produces sugar PGAL; uses ATP and NADPH from light reactions to fixate carbon in reduction reaction


process where water is split in noncyclic photophosphorylation to produce oxygen

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