Dr. Robinson tapped on a patient's knee with the little hammer, but failed to see the usual kick of the patellar reflex. Since this reflex only involves a few neurons, what part of the nervous system might the doctor most likely be concerned about?
A. Parasympathetic nervous system
B. Sympathetic nervous system
C. Central nervous system
D. Peripheral nervous system
Answer: D
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Slow-growing NTM whose colonies become pigmented when exposed to light are referred to as:
a. scotochromogens. b. photochromogens. c. nonphotochromogens. d. chromogenicums.
What role do bees play in the interaction between cowbirds and oropendola birds?
a. keep away large predators b. keep away insect pests c. pollinate species that only cowbirds prefer d. pollinate species that only oropendola birds prefer e. have no effect on the relationship between cowbirds and oropendolas
What happens to a cell that is placed in an isotonic solution?
a. The cell swells. b. The cell shrinks. c. The cell stays the same size. d. The cell crenate.
In the experiment with peacock butterflies the
working hypothesis is that
a. mimicry confuses both predator and prey. b. mimicry protects butterflies from being eaten by predatory birds. c. birds are capable of learning. d. birds are agents of evolution. e. unpalatable species display distinctive