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BIO 181 Chater 9
Photosynthesis
| Question | Answer |
|---|---|
| Photons | Light particles that contian energy thatt move as waves |
| Photons with Short wavelengths | have more energy |
| Photons with Long wavelengths | have less energy |
| Photosynthesis | occurs in plants in the chloroplast |
| Mesophyll | loaction of the chloroplast in leaf cells the cell were C4 plants take in Co2 to combind with oxalacetate before the calvin cycle |
| Chloroplasts | organelles enclosed by a double membrane |
| Stroma | fluid filled area of chloroplast with has enzymes needed to produce carbs |
| stomata | mircrosocpic pores on interior of the leaf that exchanges gases to the outside |
| Ground state | state at which atoms return to a conditoin in which all its elctrons ar inthier normal lowest eneryg levels |
| fluorescence | the light emission for an electron returning to its lower energy level |
| thylakiods | a interconnected system of flat disclike membrane sacs |
| thylakiods lumen | interiod fluid-filled area of the thylakiods |
| Grana | a stack of thylakiods |
| Chlorophll | the main pigment in photosynthesis. Absorbs light primarily in the blue (422-492 nm) and red (647-760) specturm |
| chlorophyll a | the pigment that initiates the light-dependent reactions |
| chlorophyll b | an accessory pigment that helps photosysnthesis |
| carotenoids | yellow and orange pigment that absorb differnt wavelengths expanding the energy |
| Chlorophyll structure | consists of a porphyrin ring with a (Mg) magnesium atom center and a hydrocarbon side chian |
| Chlorophyll a groups | top right hand corn on the porphyrin ring methyl gourp to define chlorophyll a |
| Chlorophyll b group | top right hand corn of the porhyrin ring function group carbonyl group define cholorphyll b |
| Engelmann Experiment | resulted large numbers of bacteria were attracted to the photosynthesizing cells in th re and blue light where are strongly absorbed through chlorophll |
| Redox reaction of photosysnthesis | Reduction and oxidation reation in photosysnethese 6 carbon dioxide are reduced to Glucose and 6 water is oxidized to 6 oxygen |
| Photosysnethesis Formula | 6Co2 (Carbon Dioxide) + 12H2O(water) ---->Light/Chloropyll----> C6H12o6(Glucose) + 6O2(Oxygen) + 6H2O(water) |
| light dependent reactions | light energy is converted to chemical energy in the thylakiods |
| Products of light dependent reactions | ATP and NADPH |
| Carbon Fixation or light independent reaction | function form the ATP and NADPH takes place in the stroma produces carbs |
| absorption spectrum | a measure of light absorption of different wavelengths |
| action spectrum | a graph of the relative effectiveness of different wavelengths |
| antenna complexes | pigment binding proteins in the thlakiod membrane that absorbs light enery |
| reaction center | special chlorophyll moelcules, protiens, and electron tranfer componets that receive energy light transfers to release an electron to make chemical energy |
| photosystem I | aka P700 has a pair of chlorophyll a molecules with a peak light absorbtio at 700 an electron can then be moved to a higher level |
| photosystem II | akaa P680 has a pair of chlorophyll a molecules with a peak light absortion at 680 an electron can them be moved to a higher level |
| noncyclic electron transport | the process at which ATP and NADPH are formed |
| electron transport chian | the path at which the energized electron is passed form one acceptor to another |
| photolysis | the process of replacing donated elctrons by splitting water and also released oxygen |
| cyclic electron transport | the process of P700 returning an electron to its self and produces an ATP |
| photophosphorylation | the making of ATP coupled to the transport of electrons |
| C4 plants | plants that live in hot dry climates that have limited carbon dioxide CO2 at night they take in CO2 and fix it to oxaloacetate |
| oxaloacetate | four carbon conpound used in C4 plants that fixates with Co2 before being processed in the calvin cycle |
| bundle shealth cells | the home the cavin cycle and the cells that surround the vien |
Created by:
eklaramore
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