The fluid-filled space that helps reduce the friction of a beating heart is called the:a

endocardium.
b. pericardial cavity.
c. interventricular septum.
d. fossa ovalis.
e. auricle.


B

Biology & Microbiology

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The following bacterial species are all implicated in dental caries EXCEPT

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Synthetic versions of muscle-building hormones are also known as ____ hormones

a. anabolic b. catabolic c. metabolic d. bully e. nutritional

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What is the proper sequence in the flow of air in

mammals? a. nasal cavities, larynx, pharynx, bronchi, trachea b. nasal cavities, pharynx, bronchi, larynx, trachea c. nasal cavities, pharynx, larynx, trachea, bronchi d. nasal cavities, larynx, pharynx, trachea, bronchi e. nasal cavities, bronchi, larynx, trachea, pharynx

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DNA replication is considered

a. random. b. the same as base pair subsitituion. c. conservative. d. heritable. e. semiconservative.

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