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English 9 Online
OpenStudy (anonymous):

Which of the following is most likely to be an observation made by an anatomist? RNA polymerase binds to a promoter, a DNA sequence that becomes a gene. Sensory receptors convert information into impulses to be sent to the CNS. The heart's epicardium forms a protective outer covering and secretes serous fluid. The middle ear is an air-filled space that separates the outer and inner ear.

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