BIOL-1003 Study Guide - Final Guide: Glutamine, Lysogenic Cycle, Carotenoid
28 May 2020
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Why not d? photosynthesis consumes co2 and produces o2. Imaging that nasa"s spirit rover has discovered a photosynthetic bacterium on mars that contains a single pigment. By using an onboard spectrophotometer, the pigment is found to have the absorption spectrum shown below. Absorbance: the pigment is green in colour, the pigment absorbs red light, electrons in the pigment are excited by only blue photons of light, the pigment is red in colour, the pigment transmits green light. The pigment does not absorb red light thus it must be red in colour. All pigments possess conjugated double bonds is correct. Why not a? doesn"t make it a pigment but okay, 0. 5 marks. Grothus- draper law: energies match so photon must get absorbed. Lowest excited state, if chla, must be red. Lots of light, lots of proton pumping but no way to dissipate gradient. Why d? must use things that are more easily oxidized (hs2) this limits there habitats.
