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ellie7
lesson 7
| Question | Answer |
|---|---|
| which processes of photosynthesis occur only in the light? which processes do not require light? | in light reactions, chlorophyll and other photosynthetic cells absorb light energy and conserve it as ATP and NADPH and 02 is evolved. IN carbon-assimilation rxns, ATP and NADPH are used to reduce CO2 |
| do plants have mitochondria? | yes-chlorophylls inside chloroplasts absorb sunlight,but the sunlight needs to be converted to chemical energy in the form of ATP & NADPH which are made in the mitochondria. Its how plants get energy for survival when there is no sunlight |
| what is the biological electron acceptor in chloroplasts that corresponds to the acceptor "A" in the hill equation? | NADP+ |
| what is the ultimate electron donor and the ultimate electron acceptor in chloroplasts? in mitochondria? In each organelle, is energy necessary as an input process, or is it produced as a consequence? | |
| why are infrared and ultraviloet light not useful for photosynthesis? | because fluorescent light is at a longer wavelength (lower energy) that absorbed light |
| what structural property of the photopigments accounts for their ability to absorb light? | |
| why are plants green? | dd |
| what advantages would a plant gain by having several different types of light absorbing pigments? | dd |
| what is the series of reactions that occurs to bring about electric charge separation in the reaction center chlorophyll? | dd |
| what is the end result of the electron transfer process through the type II reaction center? | dd |
| what additional product (over the type II reaction center) does the type I reaction center produce? | hh |
| how are diffusions and random collisions minimized in reaction centers? | dd |
| what is the connecton b/w photosystems II and I? | dd |
| what does the "z" shape of the "z scheme" actually represent? | dd |
| how many photons are required to oxidize a molecule of water? | dd |
| which compartment of photosystem II finally recieves the four electrons abstracted from water? | dd |
| why must the component of the PS1 be so closely aligned? | dd |
| under what cellular circumstances does cyclic electron flow rather than noncyclic electron flow occur? | dd |
| where in the thylakoid membrane is the PSII located? where is the PSI and ATP synthase? where is the cytochrome complex? | dd |
| what is the number of photons absorbed to number of electrons "boosted" in each photsystem? | dd |
| in order for this coupling to occur, why must the thylakoid membrane, like the inner mitochondrial membrane, be impermeable to protons? | dd |
| what component of the proton motive force is most important in chloroplasts? why? | dd |
| on which side of the thylakoid membrane is the CF1 protein complex? how is this different from and similar to the placement of the mitochondrial F1? |
Created by:
elaine_top