A patient has enough plaque buildup in the left pulmonary artery to restrict much of the blood flow through this artery. What would be the most likely effect of this blockage? The left atrium and ventricle would receive less blood flow being pumped to the rest of the body. The left lung could be damaged by reduced blood flow, so oxygen needs would rely on the right lung. The right atrium and ventricle could be damaged because of a reduced flow of blood supply. The right lung would receive less blood flow being sent back to the heart and the body.

In 2009, a flu pandemic was believed to have originated when viral transmission occurred from pig to human, thereby earning the designation, "swine flu." although pigs are thought to have been the breeding ground for the 2009 virus, sequences from bird, pig, and human viruses were all found within this newly identified virus. what is the most likely explanation of why this virus contained sequences from bird, pig, and human viruses? a) the virus was descended from a common ancestor of bird, pig, and human flu viruses.b) the infected individuals happened to be infected with all three virus types.c) related viruses can undergo genetic recombination if the rna genomes mix and match during viral assembly.d) the human was likely infected with various bacterial strains that contained all three rna viruses.