Photosynthesis Review Key.doc - Photosynthesis Review c d 1...

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Photosynthesis Review 1. Label the indicated parts in the diagram of a chloroplast. 2. A photon of which color of light would contain more energy: orange (620 nm) or blue (480 nm)? Why? Blue light – the shorter wavelength of light 3. An action spectrum shows the relative rates of photosynthesis under different wavelengths of light. Label the absorption and action spectra on this graph. Why are these lines different? The absorption spectrum shows the wavelength of light absorbed by different pigments. The action spectra shows the rate of photosynthesis at different wavelength of light. The action spectra takes into account ALL the pigments in the plant. The absorption spectra is for each individual pigment. 4. Describe the components of a photosystem. The photosystem is made of the light harvesting complex – pigments – and the reaction center. The reaction center contains the “special chlorophyll” molecules which will receive all the solar energy absorbed by the photosystem. All of tis energy will cause electrons within the “special chlorophyll” molecules to become excited. The excited electrons are lost to the primary electron acceptor, also within the reaction center.

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