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In the setting of starvation, a reduction in which of the following best explains a key benefit of ketosis in promoting survival?

Assume that your non-anemic patient is lean, has normal liver function, and lacks chronic disease. How is the following set of iron studies correctly interpreted?  

A 79-year-old man presents to the emergency room with a 3-day history of fever and cough. His lab data is shown below. Which of the following best explains these clinical findings?  

A patient with a BMI of 41 began taking an experimental drug to reduce weight. The drug was discontinued because of steatorrhea (excess fat in stool) and night-blindness. Inhibition of which of the following best explains the observation of these undesirable side-effects in this patient?

Hydroxyurea (HU) is used to treat certain types of cancer by inhibiting the activity of ribonucleotide reductase (RNR). Which of the following is a substrate for RNR and accumulates in cancer cells treated with HU?

What is the correct interpretation of these data in an untreated patient with polyuria, polydipsia, glycosuria, and an elevated body mass index?  

The effect of the Embargo Act was _____ for the U.S. economy.

Textbooks are not primary documents.

European and Native American views on property were the same.

Primary documents are always accurate.