Color blindness is caused by a genetic defect causing abnormal photopigments in the ________

A) lens B) sclera C) cones D) rods

C

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How much potassium chloride 20% should you dilute to prepare 480 mL of potassium chloride 2.5%?

A) 6 mL B) 38.4 mL C) 60 mL D) 384ml

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Naloxone is an ________ to opioid receptors.

A) agonist
B) agonist-antagonist
C) antagonist
D) analgesic

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