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NAME _________________________________________________________________________ Photosynthesis Study Guide – Test Monday What are the energy carriers in photosynthesis? APT and NADPH How does ATP work (where is energy stored, how regenerated)? Energy is stored in the 3rd phosphate bond; ADP is regenerated (recharged) into ATP by adding a Pi to ADP with the help of ATP Synthase. Energy for the ATP Synthase comes from the H+ ion moving from high concentration to low concentration. What is a pigment? What is specific pigment involved in photosynthesis? How does light wavelength (different colors) work with this pigment? Pigment is a molecule which absorbs specific wavelengths of light (colors). Chlorophyll in involved in photosynthesis. Blue and Reds are absorbed while GREEN is reflected. What is balance equation for photosynthesis? 6CO2 + 6 H2O + light C6H12O6 + 6O2 How do the reactants (inputs) get into the plant and what happens to the products (outputs)? Water enter plant through roots and Carbon Dioxide enters through the stomata/stoma of the leaves. Products: oxygen leaves thru stomata and glucose stay in plant to be used as food or as building block for other molecules What are the 2 phases or photosynthesis? Where do they take place in the chloroplast? Light dependent reaction – thylakoid membrane Light Independent (Calvin Cycle) - stroma What are the reactants and products of each phase of photosynthesis? Light dependent reaction – Reactants – H2O & ADP/NADP Light Independent (Calvin Cycle) – Reactants – CO2 & ATP/NADPH Products – O2 & ATP/NADPH Products – Glucose & ADP/NADP In basic terms, what happens to the reactants which make the products for each phase? Light dependent reaction – water is split (photolysis); electrons are used to replace high energy electrons which help make ATP and NADPH Light Independent (Calvin Cycle) –CO2 is fixed/combined with other carbon molecule to make glucose. ATP & NADPH provide energy needed to do this. What organisms do photosynthesis? Autotrophs – all plants, some protists, some bacteria