A homeschooled child recently visited an ailing great-grandparent who was complaining of a painful rash. Even though the child had had no contact with children suffering from chickenpox, the child developed chickenpox. How did the child contract the infection?
A) The virus was likely contracted from fomites.
B) The adult had chickenpox and exposed the child.
C) An insect vector infected the child.
D) The adult had shingles and the child was exposed to virus particles.
E) There is insufficient information for a conclusion.
D
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Which of the following is the most likely explanation for why the human brain is capable of so much more than what would be required for evolutionary fitness?
A. The additional capabilities are by-products of what was necessary for evolutionary fitness. B. The additional capabilities were necessary for survival at one time. C. A larger brain means that additional capabilities will follow. D. None of the answer options is correct.
A study of a cohort of 1,000 animals showed a 90 percent death rate per individual in the first year, 10 percent the
second year, and 5 percent the third year. This population's survivorship is _____. a. type I b. type II c. type III d. type I the first year and type II in years two and three e. type I the first year, type II the second year, and type III the third year
Air flow through bird lungs is a continuous circuit, flowing in one direction only
Indicate whether the statement is true or false
Respond to the following statements in reference to the four structures of the heart listed below.
A. Blood from the superior and inferior vena cava enters the heart via this structure. B. Oxygenated blood enters the heart via this structure. C. Blood is pumped to the majority of the body by this structure. D. Blood passes to the lungs from this structure. E. Deoxygenated blood exits the heart from this structure.