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level: 2.9 Photosynthesis

Questions and Answers List

level questions: 2.9 Photosynthesis

QuestionAnswer
What is photosynthesis?producing organic molecules from inorganic molecules (carbon dioxide and water)
which wavelengths do leaves absorb most?red and blue
which wavelength do leaves reflect?green
What are the different chlorophyll pigments? (4)carotenoid chlorophyll A chlorophyll B xanthophyll
What are the 2 phases of chromatography?mobile = dissolved in a fluid statoinary = passed through static material
How is RF measured?distance travelled by component / distance travelled by solvent
What are the limiting factors for photosynthesis? how does it plateau and why? (3)temperature = increases kinetic energy = more collisions if increases too much = enzymes denature light intensity: plateaus after a point because all chlorophyll are saturated and being used CO2 concentration: enzymes for carbon fixation are saturated
How has oxygenation of the earth affected oceans, atmosphere and rocks? (3)oceans - uses up iron to produce FeO2 until oxygen starts building up in the air atmos - used to be anoxic rock: banded iron formation from Fe and oxygen