Only autosomal trisomies involving chromosomes 13, 18, and 21 are survivable. Why is this?
A. These are redundant chromosomes.
B. These are relatively short chromosomes.
C. These chromosomes have no genes.
D. These are relatively long chromosomes.
E. These are relatively gene-poor chromosomes.
Answer: E
You might also like to view...
Which is not among the bones in the proximal row of carpals?
A. Pisiform B. Triquetrum C. Scaphoid D. Lunate E. Trapezoid
Movement of air into and out of the lungs is accomplished by the process of __________, whereas all movement of gases across membranes is by __________.
a. endocytosis; exocytosis b. diffusion; osmosis c. bulk flow; passive diffusion d. pinocytosis; diffusion
Distinguish among efferent vessels, afferent vessels, and exchange vessels
A) Efferent vessels exchange nutrients, dissolved gases, and wastes between the blood and interstitial fluid, afferent vessels carry blood away from the heart, and exchange vessels carry blood to the heart. B) Efferent vessels exchange nutrients, dissolved gases, and wastes between the blood and interstitial fluid, afferent vessels carry blood to the heart, and exchange vessels carry blood away from the heart. C) Efferent vessels carry blood to the heart, afferent vessels carry blood away from the heart, and exchange vessels exchange nutrients, dissolved gases, and wastes between the blood and interstitial fluid. D) Efferent vessels carry blood away from the heart, afferent vessels carry blood to the heart, and exchange vessels exchange nutrients, dissolved gases, and wastes between the blood and interstitial fluid. E) Efferent vessels carry blood to the heart, afferent vessels exchange nutrients, dissolved gases, and wastes between the blood and interstitial fluid, and exchange vessels carry blood away from the heart.
Which statement correctly describes the function of the pulmonary artery?
A) The pulmonary artery carries blood to be oxygenated in the lungs. B) The pulmonary artery returns oxygenated blood to the heart. C) The pulmonary artery carries deoxygenated blood back to the heart. D) The pulmonary artery brings oxygen and nutrients to the lung tissue.