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Ch. 6 Photosynthesis

ATP Stores energy Releases energy when phosphate group is removed
Light dependent reactions prodcuts ATP, NADPH, O2
Light independent reaction products Organic matter (carbohydrates, lipid proteins, ADP, NADP+) mainly glucose ADP, NADP+
Photosynthesis Uses sunlight to convert water & carbon dioxide into oxygen & high energy sugars 6CO2 + 12H2O----light energy----C6H12O6 + 6O2 + 6H2O
Pigments Molecules that absorb solar energy necessary for photosynthesis chlorophyll “a” gets the reaction started. ex. chlorophyll
Stroma Space that surrounds the thylakoids Also surrounds grana
Beginning step of photosynthesis Pigments in Photosystem II absorb light
Calvin Cycle and dark reactions another name fro light independent reaction
Chlorophyll a reaction to light being absorbed Electrons become excited
Autotroph Makes own food/energy
Heterotroph Eat other things for food/energy
Granum (grana) Stacks of thylakoids Contains chlorophyll
Photosystem I Unit where solar energy is absorbed and higher energy electrons are formed. I Generates ATP II Generates NADPH
NADP+ NADP+ molecules accepts electrons and H+ during photosystem to form NADPH
NADPH Carries hydrogen to Calvin Cycle and turns into NADP+
Chloroplasts Where photosynthesis happens
Thylakoids Membranes in chloroplast Photosynthetic membrane
chemiosmosis Process that relies on concentration gradient of protons Whole process of ATP synthase
ATP synthase Allows H+ ions to pass through the thylakoid membrane out of the thylakoids. Protein carrier that harnesses energy from concentration gradient of H+ to make ATP by adding a phosphate to ADP
Carbon fixation Incorporation of carbon dioxide into organic compounds Carbon dioxide comes from atoms. in as gas thru calvin cycle it joins w/ RUBP to make PGAL
ROY G BIV Colors of rainbow Red longest wave Violet shortest wave
Ribose 5-carbon sugar
Light independent reactions (what happens) CO2 enters 4rm atmosphere&combines w/carbon there already ATP&NADPH give new carbon molecules energy(ATP becomes ADP NADPH becomes NADP+ both go back to light reaction cycle repeats)Produce sugars,lipids,amino acids. Left over carbon goes thru cycle again
Light dependent reactions (what happens) Sunlight hits chlorop energy knocks electrons 4rm chlorop get passed2ETC. H2O molecules split2replace electrons lost 4rm chloro. (in form of Hydr) Oxy 4rm H2O is released. Hydr atoms 4rm H2O r picked up by NADP+ becomes NADPH carries hydrogen to Calvin C
Why are Chloroplasts green? Chlorophyll absorbs other wavelengths like red and blue, but reflects green wavelenghts of light.
Chemical equation for photosynthesis 6CO2 + 12H2O → 6O2 + C6H2O6 + 6H2O
Light independent reaction reactants CO2, ATP, NADPH, RuBP
Light independent reaction location stroma
Light dependent reaction reactants Sunlight, H2O, ADP, NADP+
Light dependent reaction location Thylakoid Membrane
photons Packet of solar energy
electrons/ electron transport chain 2 electrons are excited in chlrophyll “a” the passage of electrons along series of carrier proteins from higher to lower energy.
Created by: RisaS
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