Chapter 10 Review Sheet Photosynthesis

Biol 1406, Instructor Alice Zhou Updated 4/18/12 Chapter 10 Photo entailment 1. Describe the vim transformation that occurs in photosynthesis. Solar vim to chemical energy specifically stored in sugar. SolarChemical energy (sugar) 2. Write the succinct equation of photosynthesis. Solar + 6CO2 +6H2O C6H12O6+6O2 (simple)Complex 3. Photosynthesis produces native sugar molecules. Where does the carbon come from in making the sugars? From carbon dioxide 4. Aerobic cellular respiration is catabolic, exergonic and oxygen requiring. What approximately photosynthesis?Anabolic, endergonic, O2-releasing 5. What is the difference between autotrophs and heterotrophs? Autotrophs create their own food by photosynthesis heterotrophs tiret. 6. Name some photoautotrophs. Plants Algae Photosynthetic Bacteria 7. Draw and go after these parts of chloroplasts thylakoid, granum, stroma, prohibiteder and inner tissue layer. 8. What type of cells in a launch will contain chloroplast? What type of cell s contain mitochondria and why? Every whiz plant cell will have mitochondria, some plant cells only the thou ones will contain chloroplasts. 9. The Nature of Light and Pigments . What wavelength range is the spring of take fire for photosynthesis? Gamma X-RaysU. VVisible (VIBGYOR ROYGBIV substantiatewards)Infrargond Radio Small wavelength350nm750nmWavelength b. What are photons? * Massless * Carry touch on amount of energy (packet of energy) * Travels at speed of elucidation c. What are key molecules? Selectively absorbing visible light (chemical) -350-450nm d. Name three types of photosynthetic pigments found in green plants. Note which one is the main one, which ones are accessory pigments. * Chlorophyll A (MAIN) * Chlorophyll B (minor %) * Carotenoid (minor %) e.What makes chloroplasts or leaves green and why? Green is being reflected because it is not absorbed. f. How whoremonger you easily fragmentise them out experimentally? Paper Chromatography g. Plot an absorptio n spectrum of chlorophyll a. Be sure to use correct parameters on x and y axis. 10. organic law of pigments in photosystems. a) What is the concept of a photosystem? b) Photosystems are organized into two subcomponents * advance complex Lots of pigments (A, B, and carotenoids) Pigments along with some proteins that organize some pigments about(predicate) 200 found, scaffold proteins reply touch on complex A rival of chlorophyll A are found proteins are organized and constrain replys. pea are bound here. * (T/F? ) In either complex, membrane proteins are present to anchor and support the functions of pigment and other organic molecules. 11. Light interacts with pigments h. When photons strike the pigment molecules in the chloroplast, what immediately happens? _ Photoexcitation_____. After that, what can happen to the negatrons in the photosystem? Describe two outcomes in diagrams. Electrons fall back to ground state Electrons transferred to pea plantElectrons fall back to g round state Electrons transferred to PEA i. In outcome 1, electrons fall back to ground state. inductive reverberance energy of the excited electron, but not the electron itself, is transferred to a abutting pigment molecule, exciting the second pigment molecule. Very little energy is lost in this ENERGY transfer. j. In outcome 2, electrons are transferred to PEA (Primary Electron Acceptor) _________ reaction has occurred. The pigment molecule that has lost the electrons is___________, whereas the PEA is trim down because it gains an electron.This actually happens to two chlorophyll a pigments (RCCA) located at reaction center in a photosystem. k. Draw a diagram of photosystem to illustrates twain outcomes as photons interact with pigments 12. Light reactions l. Describe the events that have led to the redox reaction at the reaction center. 1) Photon strike Antenna Pigments 2) Photoexcitation of pigment electrons 3) Inductive resonance 4) Photoexcitation of another pigment eve ntually 5) vigour passed on to RCCA (reaction center chlorophyll A) 6) Photoexcitation of RCCA 7) m.Electrons from PEA flow downhill in energy direct through a series of electron carriers embedded in thylakoid membrane. Energy lost by the electrons is used to synthesize ____________ molecules through ______________________ process, similar in mechanisms to oxidative phosphorylation in mitochondria. n. Ultimately electrons are passed from the electron carriers to ___________ and reduce it to NADPH by the enzyme NADP+ reductase. o. Draw a diagram of the above events. Note the focus of pumping, diffusion and the site of ATP synthesis. p.Trace the electron flow in light reactions starting from the source of electrons. (non-cyclic electron flow) q. What supplies the source of all of the electrons in this electron flow to make sure that RCCA will not run out of electrons? What is the by- crop of this donation of electrons to RCCA? r. Light reactions produce ATP and NADPH. Why is the sy nthesis of these two compounds necessary? s. Sum it up What go into the light reaction and what come out of the light reaction? List all components. 13. in a flash lets move onto the next stage Calvin cycle t. What does it go through? . Where does Calvin cycle occur? v. What is the key enzyme? What is special about this enzyme? w. The immediate product of Calvin cycle is G3P _________________________. What other products can be made out of G3P? 14. combine Light Reaction with Calvin Cycle. (understand the relationship) x. What is the overall flow of electrons in photosynthesis? y. As you bending off the light in your room, the plant in your room ceases light reactions immediately, what about Calvin cycle reactions? z. If an inhibitor inhibits Calvin cycle, would the light reaction keep going?