Ashante is having surgery for a blocked coronary artery. The physician is inserting a catheter with a tiny balloon to open the blocked vessel. What is this procedure called, and what else might the physician do to keep the artery open in the long term?
What will be an ideal response?
The physician is performing an angioplasty; stents may be placed in the artery to keep it open and to prevent loose pieces of plaque from entering the bloodstream.
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A vein is a blood vessel that always carries
(a) blood toward the heart. (b) blood away from the heart. (c) oxygen-rich blood. (d) oxygen-poor blood.
Identical population splitting events occurred simultaneously on two neighboring islands, B and C, producing subpopulations B1 and B2, and C1 and C2. We do the same sampling scheme to analyze B1 and B2, and C1 and C2
We find that B1 and B2 are reproductively isolated from each other after 50,000 years, and that C1 and C2 are still interfertile after 100,000 years. Why does reproductive isolation arrive at different rates on these three islands? What will be an ideal response?
Transduction often involves defective virus
Indicate whether this statement is true or false.
A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is working on
A. determining if that species is the cause of a new disease. B. determining evolutionary relatedness. C. bioremediation. D. recombinant DNA. E. nomenclature.