Describe what is similar and what is different about the metabolic pathways used by a PS-I photoheterotroph versus a PS-I photoautotroph using the following terms correctly: electron donor, electron acceptor, reduced, oxidized, organic carbon, and inorganic carbon.

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bc blah

explanation:

bc blah

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands