When a leg vein is grafted to provide an alternate route around a point of obstruction between the aorta and a clogged coronary artery, the procedure is called ________
A) angioplasty
B) a stent
C) coronary bypass
D) coronary infarction
C
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The secondary response to an antigen is more rapid and robust than the primary response.
Answer the following statement true (T) or false (F)
One hypothesis explaining the first nucleated eukaryotic cell is based upon the fusion of an archaeon and a bacterium that, over time, saw archaeal genes involved in metabolism being lost while bacterial genes involved in information processing were also degraded.
Answer the following statement true (T) or false (F)
The area covered by tropical rain forest is reduced by millions of hectares per year due to agriculture and logging. Which of the following best describes a likely result of tropical rain forest deforestation?
(A) Populations of plants and animals will decrease as more rain forest disappears, leading to a decrease in biodiversity. (B) An increase of soil moisture will lead to a rapid increase in new vegetation coverage. (C) An increase in atmospheric carbon dioxide will lead to higher levels of ultraviolet radiation reaching the surface of Earth. (D) More oxygen will be available to other organisms as plant numbers decrease.
_________ completes the burning of glucose and breaking down of pyruvic acid to CO2.
A) Glycolysis B) The Calvin cycle C) The citric acid cycle D) The electron transport chain