The choanocytes have a flagellum that moves water through the sponge and a collar that extracts food particles from the water. In what group have you encountered very similar cells before?
A. the choanoflagellates
B. the chytrids
C. the Euglenozoa
D. the charophytes
E. the Foraminifera
A. the choanoflagellates
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What is an argument against the theory that RNA was the first polymer of life?
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a. true b. false