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Light-Dependent Reactions - Coggle Diagram
Light-Dependent Reactions
Chloroplast
Definition: Organelle where photosynthesis occurs, contains thylakoids. PG 208
Chloroplast → contains → Thylakoids
Chloroplast → site of → Light-Dependent Reactions
Mesophyll
Definition: Leaf tissue where chloroplasts are abundant and photosynthesis takes place. PG. 207
Mesophyll → contains → Chloroplasts
Stomata
Definition: Pores on leaves allowing gas exchange (CO₂ enters, O₂ exits). PG. 208
Photon
Definition: Packet of light energy absorbed by pigments. PG. 209
Photon → excites electrons in → Photosystems
Pigments
Definition: Molecules such as chlorophyll that absorb specific wavelengths of light. PG. 209
Pigments → absorb → Photons
Pigments → found in → Photosystems
Wavelength and Electromagnetic Spectrum
Definition: Range and types of light energy; pigments absorb specific wavelengths to drive photosynthesis. PG. 209
Wavelength → determines → Light energy absorbed by pigments
Photosytem II and Photosytem I
Definition: Protein complex that captures light energy second, boosts electrons to reduce NADP⁺ to NADPH. PG. 212
PSI → absorbs → Photon
PSI → transfers electrons to → NADP⁺ → forming → NADPH
Electron Transport Chain
Definition: Series of proteins transferring electrons between photosystems, creating a proton gradient used to make ATP. PG. 211
ETC → transfers electrons from → PSII → to → PSI
ETC → pumps protons to → Thylakoid lumen → creating → Proton gradient
ATP and ADP
Definition: ATP is the energy currency produced by adding a phosphate to ADP during photophosphorylation. PG. 212
Proton gradient → drives → ATP synthase → to produce → ATP
ATP → provides energy for → Calvin Cycle
NADPH and NADP+
Definition: NADP⁺ is reduced to NADPH, which carries high-energy electrons to the Calvin Cycle.
PG. 212
NADP⁺ → accepts electrons from → PSI → forming → NADPH