| A | B | 
| chloroplast | organelle where photosynthesis takes place | 
| mesophyll | CELL where photosynthesis takes place in a leaf | 
| stroma | interior of chloroplast where Calvin cycle takes place | 
| thylakoid | vast network of interconnected membranes in stacks where light rxns take place | 
| chlorophyll | ring structure that contains magnesium and reflects green light | 
| stomata | opening in leaf surface that release and take in gases | 
| light dependent reactions | light + ADP + Pi + water --> ATP, NADPH, oxygen | 
| photophosphorylation | making ATP with an ETC and light | 
| NADPH | electron carrier which transports electrons to the Calvin Cycle | 
| carbon fixation | attaching CO2 from air to a 5C RuBP in Calvin Cycle | 
| pigments | light sensitive compounds that absorb light of a particular wavelength | 
| absorption spectrum | graph showing wavelengths of light absorbed vs. absorption for a pigment | 
| photosystem | a group of pigment molecules that consist of a light-harvesting complex and a reaction center | 
| carotenes or carotenoids | orange pigments |