10 Identify the stroma. A A B B C C D D E E. 11 Identify a thylakoid. A A B B C C D D E E. 12 Where does the Calvin cycle occur? A A B B C C D D E E

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1 Unit 4 Review 1 elow is an absorption spectrum for an unknown pigment molecule. What color would this pigment appear to you? red blue green violet yellow 2 In green plants, most of the TP for synthesis of proteins, cytoplasmic streaming, and other cellular activities comes directly from photosystem I. the alvin cycle. oxidative phosphorylation. cyclic photophosphorylation. noncyclic photophosphorylation. 3 What portion of an illuminated plant cell would you expect to have the lowest ph? nucleus vacuole chloroplast thylakoid space stroma of chloroplast 4 new flower species has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are not being absorbed by this pigment? red and yellow blue and violet green and yellow blue, green, and red green, blue, and violet 5 Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be to test for O 2 fixation in the dark. to test for liberation of O 2 in the light. to test for production of either sucrose or starch. to do experiments to generate an action spectrum. to determine if they have thylakoids in the chloroplasts. 6 ssume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated from the stroma. This damage will have the most direct effect on which of the following processes? the synthesis of TP the splitting of water the reduction of NP + the absorption of light energy by chlorophyll the flow of electrons from photosystem II to photosystem I 7 In an experiment studying photosynthesis performed during the day, you provide a plant with radioactive carbon ( 14 ) dioxide as a metabolic tracer. The 14 is incorporated first into oxaloacetic acid. The plant is best characterized as a 4 plant. 3 plant. M plant. heterotroph. chemoautotroph.

2 8 Which of the following processes could still occur in a chloroplast in the presence of an inhibitor that prevents H + from passing through TP synthase complexes? the alvin cycle sugar synthesis oxidation of NPH photophosphorylation generation of a proton-motive force 9 The diagram below represents an experiment with isolated chloroplasts. The chloroplasts were first made acidic by soaking them in a solution at ph 4. fter the thylakoid space reached ph 4, the chloroplasts were transferred to a basic solution at ph 8. The chloroplasts are then placed in the dark. Which of these compounds would you expect to be produced? TP G3P NPH + H + TP and NPH + H + TP, NPH + H +, and G3P 10 Identify the stroma. 11 Identify a thylakoid. 12 Where does the alvin cycle occur? 13 Which of these equations best summarizes photosynthesis? H 2 O -> 2 H + + 1/2 O 2 + 2e - 6 O O 2 -> 6 H 12 O H 2 O 6 O H 2 O -> 6 H 12 O O 2 6 H 12 O O 2 -> 6 O H 2 O 6 H 12 O O 2 -> 6 O H 2 O + nergy 14 The light reactions of photosynthesis use and produce. water... NPH NPH... NP + NPH... oxygen carbon dioxide... sugar carbon dioxide... oxygen

3 15 releases energy that is used to pump hydrogen ions from the stroma into the thylakoid compartment. 16 splits water into 1/2 O 2, H +, and e nergized electrons from enter an electron transport chain and are then used to reduce NP hlorophyll can be found in. and and and and and 19 arbon fixation involves the addition of carbon dioxide to G3P. RuP. 3-PG. rubisco. NPH. 20 fter 3-PG is phosphorylated, it is reduced by O2. P. TP. NP +. NPH. 21 How many carbon dioxide molecules must be added to RuP to make a single molecule of glucose? In the alvin cycle, how many TP molecules are required to regenerate RuP from five G3P molecules?

4 23 In 3 plants the conservation of water promotes photosynthesis. photorespiration. the light reactions. the opening of stomata. a shift to 4 photosynthesis. 24 In 4 and M plants carbon dioxide is fixed in the of mesophyll cells. grana stoma stroma cytoplasm thylakoids 25 4 plants differ from 3 and M plants in that 4 plants open their stomata only at night. are better adapted to wet conditions. use malic acid (malate) to transfer carbon dioxide to the alvin cycle. transfer fixed carbon dioxide to cells in which the alvin cycle occurs. oth and

5 Question nswer Key Page 1 Unit 4 Review Question: nswer 10/19/ :41:32 PM

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