Changes to the earth's atmosphere oceans and rock deposition due to photosynthesis describe the atmosphere before photosynthesis evolved state the type of organism that first carried out photosynthesis questions ib biology
Answers
Answer
Understandings:
Photosynthesis is the production of carbon compounds in cells using light energy
Visible light has a range of wavelengths with violet the shortest wavelength and red the longest
Chlorophyll absorbs red and blue light most effectively and reflects green light more than other colours
Oxygen is produced in photosynthesis from the photolysis of water
Energy is needed to produce carbohydrates and other carbon compounds from carbon dioxide
Temperature, light intensity and carbon dioxide concentration are possible limiting factors on the rate of photosynthesis
Applications:
Changes to the Earth’s atmosphere, oceans and rock deposition due to photosynthesis
Skills:
Drawing an absorption spectrum for chlorophyll and an action spectrum for photosynthesis
Design of experiments to investigate the effect of limiting factors on photosynthesis
Separation of photosynthetic pigments by chromatograph
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