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: 16107

#Unit 7. System Physiology – Animal

The most important function of sweat is to remove from the body excess

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#Question id: 753

#Unit 1. Molecules and their Interaction Relevant to Biology

The renaturation of regions of complementarity between different nucleic acid strands is known as___________

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#Question id: 4355

#Unit 3. Fundamental Processes

The reason for differences in the sets of proteins expressed in a nerve and a pancreatic cell of the same individual is that nerve and pancreatic cells contain different __.

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#Question id: 9223

#Unit 9. Diversity of Life Forms

Managing southeastern forests specifically for the red-cockaded woodpecker ________.

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#Question id: 3436

#Unit 11. Evolution and Behavior

Loss of responsiveness to stimuli that convey little or no new information is called