A physician administers 250 mg of drug X to a patient as an oral pill and finds that only 50 mg of the drug becomes bioavailable. If it is known that absorption of the drug in the GI tract is 80%, what percent of the drug absorbed is lost to the first pass of the liver? A) 80% B) 60% C) 25% D) 20% E) 75%

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A: Since you did not mention which question, so we are answering 1st question for you:

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A:

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A:

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Vitamins and Coenzymes

A class of organic compounds needed in the human body for normal activities is known as vitamins. They are characterized into two parts depending upon their solubility in water. They can act as coenzymes, cofactors, or prosthetic groups for enzymes.