Describe how the functional units for beta carotene, xanthophyll, chlorophyll a, and chlorophyll b are different. be sure to identify the subunits that adhere to paper during chromatography. 2. describe a technique for measuring photosynthetic rate. 3. many deciduous trees have leaves which turn yellow in the fall. what do you suppose is happening in the leaves at the cellular and molecular level? 4. chloroplasts and mitochondria are both are unusual in that they have double membranes and contain their own set of dna. can you think of any explanations for this observation?
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