Which of the following are virulence factors contributing the pathogenicity of Neisseria species?
A. hemolysin
B. fimbriae
C. a capsule
D. exotoxins
E. both a capsule and fimbriae
Answer: E
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Classical conditioning such as the salivating of Pavlov's dog in response to a metronome is based on a(n)
A. operant condition. B. sign stimulus. C. involuntary response. D. dishabituation. E. None of the choices are correct.
What is the first step in investigating any ecological question?
a) make observations b) make a computer model c) conduct and experiment d) come to a conclusion
Homo neanderthalensis were about the same height as Homo sapiens, but they:
a. were more robust and muscular. b. were slighter and weaker. c. had skeletal features more adapted to life in trees. d. had much smaller heads. e. Both a) and c) are correct
What information would best help you distinguish what type of sensation a sensory neuron transmits?
A. The rate of action potential firing B. The proteins it expresses most abundantly C. The amplitude of action potentials D. The part of the brain it transmits signals to E. The diameter of the axon