Photosynthesis and Cellular Respiration
Photosynthesis
Cellular Respiration
Location: Chloroplasts
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Reactions:
Calvin Cycle (synthesis)
Uses chemical Energy from the Light Reaction into carbohydrates in the stroma.
6(CO2) + 12 (H2O) = 6(CH2O) + 6(H2O) + 6(O2)
Light Reaction (photo)
Uses green pigment to turn solar energy into chemical energy (ATP + NADPH) in the Thylakoid.
Photosystem 2: The Energy used in the Light Reaction comes from energizes electrons who send their energy down the electron transport chain. Also the location where ATP is created.
photosystem 1: uses electron acceptor from the ETC to reduce NADP+ which becomes NADPH when hydrogen is added.
The electron transport chain is a series of electron acceptance molecules that pass the energy on until it reaches photosystem 1.
Thylakoid: flattened sacs where solar energy is captured. Housed in the chloroplast.
ATP: Adenosine triphosphate. Energy currency within cells
NADP+: Needs energy
NADPH: energy from used in Calvin Cycle
Sugar (CH2O) is the form of energy used my organisms to complete the functions of life.
Water (H20) is taken in by the roots
CO2 is taken in by the stomata
Stomata: cellular opening
Step 1: Carbon Fixation. CO2 is harnessed from the air and combined with RuBP to great 3 PG (phosphoglycerate)
ATP Synthesis: creates ATP as H+ ions move from the high level in the thylakoid to low level in the stroma.
Step 2: Reduction of Carbon Dioxide. 3GP is first reduced to BTP by removing one phosphate then reduced again to G3P which has more electrons
During this step, ATP becomes ADP (first part) and NADPH becomes NADP+ (Second Part)
G3P is important because it is able to store energy and be part of large molecules.
Step 3: Regeneration of RuBp. Steps 1 & 2 happen twice more to replenish RuBP