Using sequence data, it has been shown that:
A. humans evolved from the Neanderthals.
B. Homo sapiens arose gradually in many places.
C. Homo sapiens arose separately from Homo erectus and Homo neanderthalensis, expanding out of Africa.
D. Homo sapiens arose separately from Homo erectus and Homo neanderthalensis, expanding out of Asia.
E. Homo sapiens evolved from Homo erectus.
C
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Which of the following factors likely did NOT contribute to the evolution of distinctive human characteristics relative to Great Apes?
A. alteration of developmental timing so that certain juvenile characteristics are retained in the sexually mature adult B. the evolution of bi-pedalism followed by evolutionary modifications to the skull, pelvic structure, foot and legs C. the evolution of bi-pedalism followed by increasingly sophisticated tool use, cognitive ability, and social organization D. the evolution of the FoxP2 gene associated with more sophisticated language E. the evolution of opposable thumbs followed by increasingly sophisticated tool use
Which structure in the accompanying figure is responsible for allowing entire regions of cells to respond to a single
stimulus?
a. A b. B c. C d. D e. E
Compare the structure and function of three of the following types of blood vessels: arteries, arterioles, veins, venules
and capillaries. What will be an ideal response?
If high amounts of sulfanilamide are in the presence of an enzyme whose substrate is PABA, what outcome is expected?
a. PABA products will increase in concentration. b. The enzyme will stop functioning. c. The substrate will destroy the inhibitor. d. Sulfanilamide products will be in higher concentration.