Over the past 12 weeks, a 75-year-old man with a moderate aortic stenosis has developed shortness of breath and chest pains during exertion. He appears pale. Test of his stool for blood is positive. Laboratory studies show the following: hemoglobin 7.2 g/dL, and mean corpuscular volume 75. A blood smear shows microcytic, hypochromic erythrocytes. Which of the following is the most likely diagnosis?

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#Question id: 4155

#3. Fundamental Processes

Of all the possible triplet codons, __ do not code for an amino acid.

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#Question id: 4181

#3. Fundamental Processes

The codon for the amino acid specified by the anticodon at the anticodon arm of tRNA is covalently linked to tRNA at the

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#Question id: 9239

#9. Diversity of Life Forms

Why are changes in the global carbon cycle important?

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#Question id: 12396

#6. System Physiology – Plant

Which compound  are included in the buffer washout solution, that involved in prevent normal relocalization of PIN to the plasma membrane ?

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#Question id: 15710

#12. Applied Biology

A phenolic compound, is sometimes added to inhibit the enzyme IAA oxidase responsible for the breakdown of IAA.