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- 1. Multiple ChoiceWhich of the following are products of the light reactions of photosynthesis that are utilized in the Calvin Cycle?CO2 and glucoseATP and NADPHADP, P and NADP+H2Oand O2
- 2. Multiple ChoiceWhere does the Calvin cycle take place?Stromathylakoidthylakoid spacematrix
- 3. Multiple ChoiceWhen oxygen is released as a result of photosynthesis, it is a direct by-product of____reducing NADP+splitting water moleculeschemiosmosiselectron transfer in photosystem 1
- 4. Multiple ChoiceA plant has reddish leaves. What wavelengths of visible light are being absorbed by this pigmentred, yellowblue, violetgreen, yellowblue, green, yellow
- 5. Multiple ChoiceWhat is the main role of the pigment molecules in a light-harvesting complex in the thylakoid membranes?split water and release oxygen to te reaction-center chloropylltransfer light energy to the reaction-center chlorophyllsynthesize ATPtransfer electrons to NADPH
- 6. Multiple ChoiceWhich of the following processes could still occur in a chloroplast in the presence of an inhibitor that prevents H+ from passing through ATP synthasecomplexes?photophosphorylationCalvin cycleoxidation of NADPHgeneration of proton-motive force
- 7. Multiple ChoiceT or F: Autotrophs, but not heterotrophs, can nourish themselves beginning with carbon dioxide and other nutrients that are entirely organicTrueFalse
- 8. Multiple ChoiceT or F: Chemiosmosis is unique to noncyclic photophophorylation.TrueFalse
- 9. Multiple ChoiceWhich of the following processes is most directly driven by light energy?carbon fixation in stromareduction of NADP moleculesATP Synthesisremoval of electrons from membrane-bound chlorophyll molecules
- 10. Multiple ChoiceIn what respect are the photosynthetic adaptations of C4 plants and CAM plants similar?an enzyme other than Rubisco carries out the first step in carbon fixationboth types of plants make most of their sugar in the darkboth types of plants make their sugar without the Calvin cycleStomata normally close during the day
- 11. Multiple ChoiceT or F: The light reactions of photosynthesis suppley the calvin cyucle with ATP and NADPHTrueFalse
- 12. Multiple ChoiceWhat is the relationship between wavelngth of light and the quanitity of energy per photon?direct, linear relationshipinversely relatedlogarithmically relatedonly related in certain parts of the spectrum
- 13. Multiple ChoiceThe splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during ______photosynthesisrespirationneither photosynthesis or respirationboth photosynthesis and respiration
- 14. Multiple ChoiceT or F: In photosynthetic cells, the electron transport chains are located in the thylakoid membranes and mitochondrial inener membranes.TrueFalse
- 15. Multiple ChoiceT or F: Photosynthesis is anabolic and Cellular respiration is catabolicTrueFalse
- 16. Multiple ChoiceIn chemiosimosis in mitochondria, protons flow from the intermembrane space into the matrix, whearas in chemiosimosis in chloroplast, protons flow from __________the thylakoid space to the stomathe stoma to the thylakoid spacethe matrix into the stomathe stoma into the cytosol
- 17. Multiple ChoiceWhich of the following events occurs in the light reactions of photosynthesis?NADP+ is producedATP is consumed to yield ADPlight is absorbed and funneled to chlorophyll acarbon dioxide is fixed in organic molecules
- 18. Multiple Choice________________ cells in leaves are specialized for photosynthesis.mesophyllschlerenchymatracheidcollenchyma
- 19. Multiple ChoiceT or F: Photorespiration lowers the efficiency of photosynthesis by removing RuBP molecules from the Calvin cycle.TrueFalse
- 20. Multiple ChoiceWhich of the following activities is associated with photosystem II?light energy excites electrons in the thylakoid membrane ETCelectrons released from P680 are replaced by electrons derived from waterP680 donates a pair of electron to NADP+electrons are passed from P680 to molecular oxygen
- 21. Multiple ChoiceThe color of light least effective in driving photosynthesis is _________blueredorangegreen
- 22. Multiple ChoiceCyclic electron flow in the cloroplast produces________ATPNADPHboth ATP and NADPHglucose
- 23. Multiple ChoiceWhy are C4 plants able to photosynthesize with no apparent photorespiration?they do not participate in the Calvin cyclethey use PEP carboxylase to initially fix carbon dioxidethey conserve water more efficientlythey exclude oxygen from their tissues
- 24. Multiple ChoiceT or F: CAM plants keep their stomates closed in daytime and fix carbon dioxide during the night , thus reducing loss of water.TrueFalse
- 25. Multiple ChoiceT or F: The light reactions of Photosynthesis requires ATP.TrueFalse
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