1. Most cyanobacteria are photoautotrophs. Some other bacteria are called photoheterotrophs. What do you think this...

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Biology

1. Most cyanobacteria are photoautotrophs. Some other bacteriaare called photoheterotrophs. What do you think this means in termsof metabolic capability and production? Explain. Would you thinkphotoheterotrophs represent an ancestral group of photosyntheticorganisms or a more recent group that evolved after thephotoautotrophs?
2. Some plants with genetic defects are unable to photorespire.These plants end up being damaged under intense light. Researchesidentify this as evidence that photorespiration is a protectivemechanism in plants. Why might a disabling of the photorespiratorypathway lead to cell damage and how might the process ofphotorespiration mitigate this damage?

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1CYANOBACTERIA AS PHOTOAUTOTROPHS The majority of cyanobacteria are aerobic photoautotrophs Photoautotrophs are oraganisms that can make their own energy using light and carbon dioxide via the process of photosynthesis Their life process require only water carbon dioxide inorganic substances and light Photosynthesis is their principal mode of energy metabolism The use of photosynthetic cyanobacteria to directly convert carbon dioxide to biofuels is an emerging area of interest They are sources of producing highvalu chemicals for example pigments vitamins and enzymes CYANOBACTERIA AS PHOTOHETEROTROPHS It depends on organic matter already produced by other organisms for its nourishment Photoheterotrophs obtain their energy from sunlight and carbon from organic material and carbon dioxide Photo heterotrophs produce ATP through phosphorylation but use environmentally obtained organic compounds to build See Answer

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