Photosynthesis Vocabulary

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Across
  1. 1. one of two light-harvesting units of a chloroplast's thylakoid membrane; it uses the P680 reaction-center chlorophyll.
  2. 2. a green pigment found in the chloroplasts of plants, algae, and some bacteria
  3. 3. a quantum, or discrete amount, of light energy.
  4. 4. enzyme that catalyzes the first step of the Calvin cycle
  5. 7. a dark-green plant pigment having a brilliant green alcohol solution
  6. 8. and NADPH, evolving oxygen in the process.
  7. 9. light-collecting units of the chloroplast
  8. 11. the steps in photosynthesis that occur on the thylakoid membranes of the chloroplast and that convert solar energy to the chemical energy of
  9. 15. the incorporation of carbon from carbon dioxide into an organic compound by an autotrophic organism.
  10. 18. that portion of the electromagnetic spectrum detected as various colors by the human eye, ranging in wavelength from about 380 nm to about 750
  11. 20. instrument that measures index of light reflection
  12. 21. the distance between crests of waves, such as those of the electromagnetic spectrum.
  13. 22. yellow and orange plant pigments that aid in photosynthesis
  14. 24. the entire frequency range of electromagnetic waves
  15. 25. plant that carries out crassulacean acid metabolism; carbon is initially fixed into organic acids at night in the reaction of CO2 and phosphoenolpyruvate, catalyzed by PEP carboxylase; during the day the acids break down to yield CO2, which enters the Calvin cycle.
  16. 26. the small openings on the undersides of most leaves through which oxygen and carbon dioxide can move
  17. 27. the second of two major stages in photosynthesis (following the light reactions),involving atmospheric CO2 fixation and reduction of the fixed carbon into carbohydrate.
  18. 28. nicotinamide adenine dinucleotide phosphate, an acceptor that temporarily stores energized electrons produced during the light reactions.
Down
  1. 1. the process of adding a phosphate group to ADP to make atp;cells use the energy released by ATP to power essential activities
  2. 5. a type of photosynthetic cells arranged into tightly packed sheaths around the veins of a leaf
  3. 6. one of two light-harvesting units of a chloroplast's thylakoid membrane; it uses the P700 reaction-center chlorophyll.
  4. 10. a plant that uses the Calvin cycle for the initial steps that incorporate co2 into organic material, forming a three-carbon compound as the first stable intermediate.
  5. 12. specialized ground tissue that makes up the bulk of most leaves; performs most of a plant's photosynthesis
  6. 13. organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
  7. 14. the range of a pigment's ability to absorb various wavelengths of light.
  8. 16. a plant that prefaces the Calvin cycle with reactions that incorporate co2 into a four-carbon compound, the end product of which supplies CO2 for the
  9. 17. an organism that obtains organic food molecules by eating other organisms or their byproducts and that cannot synthesize organic compounds from inorganic materials
  10. 19. process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
  11. 23. a metabolic pathway that consumes oxygen, releases carbon dioxide, generates no ATP, and decreases photosynthetic output; generally occurs on hot, dry, bright days, when stomata close and the oxygen concentration in the leaf exceeds that of carbon dioxide.
  12. 25. cycle.
  13. 27. a blue-black plant pigment having a blue-green alcohol solution