Topic 14 and 15: Photosynthesis Flashcards
What are in the inputs and outputs for the light reactions of photosynthesis?
Inputs: carbon dioxide, water, and energy.
Outputs: Sugar(glucose) and oxygen
Describe general photosystem. What is the difference between Photosystem 1 and Photosystem 2?
General photosystem is the step where light energy is converted into chemical energy. Photosytem are multi protein complexes. Both photosystems have a light harvesting complex and a reaction center.
Photosystem 2: Captures energy from sunlight and uses to energy to extract electrons from water molecules. For ATP Synthase
Photosystem 1: Electrons travel the electron transport chain in the chloroplast and reduce NADP+ into NADPH. For the Calvin cycle to proceed.
What are pigments? Describe their role in photosynthesis.
Pigments reflect and transmit the wavelength they can absorb. Ex: Chlorophyll and Cartenoid
Pigments absorb light in photosynthesis.
Describe/draw the thylakoid membrane with all the complexes required for the light reactions.
Components Required:
Photosystem 1 and 2
ATP Synthase
Cytochrome complex
Describe/Draw the path of electron through the light reactions. Indicate where ATP, NADPH, and Oxygen are produced.
What are the inputs and outputs for the Calvin cycle of photosynthesis?
Inputs: NADPH and ATP and CO2
Outputs: Sugar molecule forms of reduced carbons
What are the three steps of the Calvin cycle? Indicate any use of NADPH or ATP.
Three steps of the Calvin cycle are: Fixation, Reduction, Regeneration
Fixation: Co2 is fixed from an inorganic to organic compound.
Reduction: ATP and NADPH are used to convert 3-pga into G3P
Regeneration: One G3P is exited from the Calvin cycle 5 remain inside
Diagram where in the chloroplasts the Calvin cycle and ETC take place. Where is there a high H+? Where is there a low H+?
Low H+ concentration in the stroma. And high H+ concentration in the thylakoid space.
