Sphincters

a. are circular muscles.
b. prevent backflow.
c. are smooth muscles.
d. are found at the entrance and exit of the
stomach.
e. include all of these


E

Biology & Microbiology

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Fill in the blank(s) with the appropriate word(s).

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What species of Rhizopus may infect people who

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A well-substantiated explanation of some aspect the natural world, based on a body of facts that have been repeatedly confirmed through observations and experiments, is referred to as a(n) ________

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What statement about homeotic genes, as it relates to morphogenesis in Drosophila, is NOT true?

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