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- 1. Multiple ChoiceWhich of the following is NOT a product of the light reactions?ATPNADPHOxygenGlucose
- 2. Multiple ChoiceWhat does ATP synthase do?Create ATP in chemiosmosis.Break down ATP in chemiosmosis.Break down NADPH.Create NADPH.
- 3. Multiple ChoiceWhat is the function of NADP+?It absorbs lightIt is an electron carrierIt is a light-reflecting pigmentIt acts as long-term energy storage
- 4. Multiple ChoiceWhich substance from the light-dependent reactions of photosynthesis is a source of energy for the light-independent reactions?ADPH2ONADPHpyruvic acid
- 5. Multiple ChoiceWhat is the ultimate source of energy for life on Earth?glucosesunlightATPH2O
- 6. Multiple ChoiceWhat is the purpose of splitting water in PS2 of the light dependent reaction?Provides e- for PS2 and H+ for the thylakoid spaceTo produce Oxygen for animalsThere is no purpose
- 7. Multiple ChoiceIt is important to create a concentration of H+ in the thylakoid space so that the H+ can diffuse through_________ to create ______.ATP synthase, ATPNADH, NADPHproton pump, protons
- 8. Multiple Choice
Where do the light reactions happen?mitochondria membranethylakoid membranestromacentral vacuole - 9. Multiple ChoiceAccording to this absorption spectrum, what color is not used by the chlorophyll pigments?greenblueyellowred
- 10. Multiple ChoiceWhat supplies the electron that is lost in PS II?oxygenwaterglucoserubisco
- 11. Multiple ChoiceWhat are the two products of the light reactions that are needed for the calvin cycle?NAD and NADPHNADP + and GlucoseNADPH and ATPOxygen and NADPH
- 12. Multiple ChoiceWhat is the main purpose of the light reactions?To provide the energy and electrons for the calvin cycleTo capture energy and make sugarTo reflect green lightTo make sugars
- 13. Multiple ChoiceWhich organelle performs PHOTOSYNTHESIS?ChloroplastMitochondriaribosomesvacuoles
- 14. Multiple ChoiceWhat is the pigment in chloroplasts that performs photosynthesis?ChlorosynthesisChlorophyllADPElectron Transport
- 15. Multiple ChoiceWhat gas does the process of photosynthesis release into the atmosphere?oxygencarbon dioxidewaternitrogen
- 16. Multiple ChoiceWhich of the following is NOT a reactant of the light reactions?LightWaterCarbon dioxide
- 17. Multiple ChoiceChemiosmosis creates molecules ofATPNADPHNADPC6H12O6
- 18. Multiple ChoiceA group of accessory pigments responsible for the yellow and orange color in carrots and sweet potatoes are examples ofchlorophyll achlorophyll bchloroplastcarotenoids
- 19. Multiple ChoiceWhat does an electron being "excited" mean?It has been released from a water moleculeIt has lost energy.It has gained energy.It has been accepted by an electron carrier.
- 20. Multiple ChoiceThe energy lost by electrons as they move from PS II to PS I is used toadd H+ to NADP to form NADPHmove H+ from the stroma to the thylakoid spacemove H+ from the thylakoid space to the stromamove the electrons to PS I
- 21. Multiple ChoiceThe H+ concentration gradient is used tomake NADPHsplit a water moleculegenerate ATPform water
- 22. Multiple ChoiceWhat substance is produced at the end of the light dependent reaction?NADPHNADPCarbon dioxideGlucose
- 23. Multiple ChoiceWhat is the name of the enzyme involved in ATP production?ATP synthaseADP synthaseATP synthizeADP synthize
- 24. Multiple ChoiceProtons move into the thylakoid due to theconcentration gradient in the stromaBrownian motion of the protons.peer pressure of the cool electrons in the stroma.movement of electrons through the electron transport chain
- 25. Multiple ChoiceWhat are electron carrier molecules?Molecules that transfer high energy electrons to other moleculesMolecules that carry energy from one reaction to anotherMolecules that make ATPMolecules that have little dogs that fit in their purse
- 26. Multiple ChoiceIn chemiosmotic phosphorylation, what is the most direct source of energy that is used to convert ADP + Pi to ATP?energy released as electrons flow through the ETCenergy released from substrate level phosphorylationenergy released from ATP synthase pumping H+ against their gradientenergy released from movement of protons through ATP synthase
- 27. Multiple Choice
What does light do when it strikes the chlorophyll molecules of photosystems I and II?
Light causes glucose to be synthesized directly inside the chlorophyll molecules of the photosystems.
Light causes electrons to get excited (gain energy) and travel down the electron transport chain embedded in the thylakoid membrane.
Light causes the conversion of water into carbon dioxide, oxygen, and electrons.
Light directly causes carbon dioxide to attach to RuBP during the carbon fixation stage of the Calvin Cycle.
- 28. Multiple Choice
After light excites the electron and they leave Photosystem II to travel down the first electron transport chain, how are these electrons replaced to Photosystem II?
Oxygen is reduced and the electrons are given to the chlorophyll molecules of photosystem II.
Carbon dioxide is split, and the electrons are given to the chlorophyll molecules of photosystem II.
Hydrogen undergoes fusion, and the electrons are given to the chlorophyll molecules of photosystem II.
Water is split, and the electrons are given to the chlorophyll molecules of photosystem II.
- 29. Multiple Choice
The splitting of water at photosystem II is known as ____ and results in the production of _____.
photosynthesis: carbon dioxide, G3P, and electrons that are given to photosystem II.
photolysis: oxygen, hydrogen ions (protons), and electrons that are given to photosystem II.
the Calvin cycle: carbon dioxide, G3P, and electrons that are given to photosystem II
chemiosmosis: oxygen, hydrogen ions (protons), glucose and electrons that are given to photosystem II.
- 30. Multiple Choice
Why do hydrogen ions flow from the thylakoid space to the stroma through ATP synthase?
They are pumped actively through the ATP synthase. This uses ATP energy and causes the production of ADP and phosphate.
They flow through the Calvin cycle and produce light.
Hydrogen ions do not actually flow from the thylakoid space to the stroma. They flow the opposite way.
They flow passively from the high to low concentration via facilitated diffusion. As they flow through ATP synthase, the enzyme spins and produces ATP.
- 31. Multiple Choice
After electrons get excited by light a second time (at photosystem I), where do they go?
They travel down a second electron transport chain and are donated to ADP, which is then converted to ATP.
They remain excited and then travel to photosystem II where they get even more excited until they spontaneously combust.
They travel down a second electron transport chain and are donated to NADP+ which becomes NADPH (an electron carrier).
They travel down a second electron transport chain and are donated to oxygen which then bonds to hydrogen ions to form water.
- 32. Multiple ChoicePlants need ________from the air for photosynthesisoxygensoilcarbon dioxidesugar
- 33. Multiple ChoiceWhat do plants give off after photosynthesis?Oxygencarbonnitrogenhydrogen
- 34. Multiple ChoiceWhat molecule absorbs sunlight during photosynthesis?Epidermisthylakoidthe leafchlorophyll
- 35. Multiple ChoiceWhich statement about photosynthesis is correct?Plants get the energy they need for photosynthesis from water.Plants get the energy they need for photosynthesis from soil.Plants get the energy they need for photosynthesis from sunlight.Plants do not require energy to perform photosynthesis.
- 36. Multiple ChoiceThe products of photosynthesis arewater and carbon dioxideoxygen and watersugar and cabon dioxideoxygen and sugar (glucose)
- 37. Multiple ChoiceWhich gas is removed from the atmosphere during photosynthesis?hydrogenoxygennitrogencarbon dioxide
- 38. Multiple ChoiceThe main source of energy for all life comes from ____.the Earththe moonthe sunthe food we eat/make
- 39. Multiple ChoiceCarbon dioxide and oxygen both enter and leave the leaf at theporespongy measophyllguard cellsstomata
- 40. Multiple Choice
Pigments are found in the
Stroma
Thylakoid
Mitochondria
Nucleus
- 41. Multiple Choice
Light dependent reactions
Happen at night
Capture energy from the sun
Release CO2
Require Oxygen
- 42. Multiple Choice
Cretinoids, xanthophils and anthocyannins are all
Pigments
Proteins
Pores in the plant
Green
- 43. Multiple Choice
Chlorophyll a appears blue-green because
It absorbs blue-green light
It reflects blue-green light
- 44. Multiple Choice
According to the graph, what colors of light does this pigment absorb
purple/ blue
Green
yellow
Orange
- 45. Multiple Choice
Based on the information on the graph, what color does this pigment appear?
Purple
Green
Red
Blue
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