Photosynthesis (5.5-5.9) Flashcards
Calvin cycle
The group of light-independent reactions involved in photosynthesis
Produces GALP from CO2 and a 5C molecule
Carbon fixation (Calvin cycle)
The addition of CO2 to RUBP to form an unstable 6 carbon intermediate in the Calvin cycle catalysed by RuBisCO
Chlorophyll
The main photosynthetic pigment found in chloroplasts which is used to capture energy from light during photosynthesis.
Chloroplast
An organelle found in plants and algae which is the site of photosynthesis.
Glyceraldehyde-3-phosphate (GALP)
The 3 carbon molecule produced by the reduction of GP by reduced NADP using the energy provided by the hydrolysis of ATP.
Glycerate 3-phosphate (GP)
The 3 carbon molecule produced by the spontaneous breakdown of the 6 carbon product of carbon fixation.
Granum
A stack of thylakoids.
Photolysis of water
Light energy splits water into protons, electrons and oxygen
Helps replace electrons in PS2
Photophosphorylation of ATP
A phosphate group is added onto ADP to form ATP using light energy
Photosynthesis
The process of using light energy to carry out the photolysis of water and store the hydrogen in organic molecules by combining it with carbon dioxide
RuBisCO
The enzyme used to fix carbon dioxide in the Calvin cycle.
Stroma
The liquid portion of the chloroplasts where the light-independent reactions of photosynthesis take place.
Thylakoids
Flattened membrane-bound sacs found inside chloroplasts which are the site of the light-dependent reactions of photosynthesis.
ATP synthase
Catalyses the phosphorylation of ADP to ATP by transporting hydrogens back down their concentration gradient
Products of light dependent reaction
ATP (made from ADP and Pi in photophosphorylation)
reduced NADP (from NADP)
Protons, hydrogen and oxygen (from photolysis of water)