A scientist quantifies substance A in a flask where chemical reactions are occurring. A plot of the amount of product as a function of time is a straight line with a slope of -0.8 mmol/second. The negative value of the slope indicates what?
A) The amount of substance A in the flask is decreasing over time.
B) The amount of substance A in the flask is increasing over time.
C) The amount of substance A in the flask remains constant over time.
D) None of the above
A
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Which of the following is the correct classification for proximal caries of enamel and dentin definitely at or through the dentinoenamel junction (DEJ) but less than halfway through the dentin toward the pulp?
A) C-1 B) C-2 C) C-3 D) C-4
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Continuity of the GI tract can be reestablished after an excision with a/an:
A) anastomosis. B) endoscopy. C) gastric bypass. D) vagotomy.
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