Cells use different processes at different times to provide an organism with the energy that it needs. Spirulina is an autotrophic bacteria that can be found in freshwater and marine environments. Which process takes place in the cells of Spirulina that does not occur in the cells of a human?

Spirulina is an autotroph, so its cells can make sugars using light energy through photosynthesis. Human cells do not photosynthesize; they obtain energy from food. Both Spirulina and humans can carry out cellular respiration, so the process unique to Spirulina here is photosynthesis.

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