Compare and contrast the prokaryotic and eukaryotic light-gathering machinery function and spatial organization. Why do various chlorophylls show different absorption spectra?
What will be an ideal response?
Answer: Both prokaryotes and eukaryotes use chlorophylls to gather light energy. Eukaryotes have chloroplast organelles that house the chlorophylls. Prokaryotes instead have chlorophylls located within other internal membrane systems. For example, cyanobacteria have thylakoid membranes, and green bacteria have chlorosomes. Different chlorophylls (e.g., Chl a and Chl b) have structural variations at the chemical level, which results in varied capabilities of absorbing different light wavelengths. Consequently, the light that these various chlorophylls absorb also make them transmit (or appear) as different colors too.
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What will be an ideal response?