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32 Cards in this Set
- Front
- Back
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What are grana? |
Stacks of membranous sacs |
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C4 plants converse water by |
Keeping their stomata closed when the weather is hot and dry |
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What is responsible for the yellow-orange coloration of leaves in the fall? |
Carotenoids |
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Which of the following is found in both cellular respiration and in the light reactions of photosynthesis? |
Electron transport chain |
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Which of the following is an autotroph? |
Pine tree |
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In photosynthesis, an H+ ion gradient forms across the ______. |
Thylakoid membrane |
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The Calvin cycle requires ______ and ______ from light-dependent reactions in order to operate. |
ATP . . . NADPH |
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What compound is found at the reaction center of a photosystem? |
Chlorophyll a |
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What molecule absorbs a photon, one of its electrons is raised to the ______ state. |
Excited |
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The light reactions of photosynthesis take place _____. |
In the thylakoid membrane |
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What is one reason why plants have accessory pigment molecules, like chlorophyll b and carotenoids? |
To absorb energy in parts of the electromagnetic spectrum that chlorophyll a cannot |
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The products of the light reactions of photosynthesis are ______. |
ATP and NADPH |
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The light reactions of photosynthesis convert _____ energy to _____ energy. |
Solar . . . Chemical |
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The energy of wavelengths that appear _____ is least useful to photosynthesis. |
Green |
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The shorter the wavelength of visible light, the ______. |
Greater the energy |
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The Calvin Cycle makes direct use of _______ to make ______. |
CO2, ATP, and NADPH . . . sugar |
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The color that we see when looking at a pigmented object is _______. |
The wavelengths that are reflected or transmitted by the pigmented object |
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What is the function of the stomata? |
Gas exchange |
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Which of the following is a way that a molecule releases energy gained by absorption of a photon? |
Loss of an electron, light, heat, and fluorescence |
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CAM plants conserve water by |
opening their stomata only at night |
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Which of the following is a way that a molecule releases energy gained by absorption of a photon? |
Loss of an electron, light, heat, and fluorescence |
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If you provided your shade-tolerant plants with their preferred wavelength of light, but only minimal amounts of water, which of the following would you expect to occur? |
decreased amounts of ATP being produced by the plants |
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CAM plants conserve water by |
opening their stomata only at night |
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Which of the following equations best summarizes photosynthesis? |
6CO2 + 6H2O > C6H12O6 + 6O2 |
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_____ is the source of the oxygen gas released by a photosystem. |
H2O |
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Where are photosystem a located? |
Thylakoid membrane |
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Through what structure(s) do plants obtain most of their water? |
Roots |
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Photosynthesis contributes to plant growth by _____. |
Taking in carbon dioxide and making sugars (carbohydrates) |
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If a plant appears blue to us, what wavelength of light is being reflected? |
Blue |
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What name is given to a discrete packet of light? |
Photon |
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In which organelle does photosynthesis take place? |
Chloroplast |
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In photosynthesis, redox reactions ultimately transfer electrons from ____ to ____. |
H2O . . . CO2 |
