The discovery that viruses act more like a chemical than an organism came from work with the
A. tobacco mosaic virus.
B. HIV virus.
C. Vibrio cholerae virus.
D. SARS virus.
Answer: A
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Approximately half of the blood volume
consists of
a. plasma. b. erythrocytes. c. lymph. d. plasma proteins. e. leukocytes
Synaptic integration means that
a. positive or excitatory stimuli produce an excitatory postsynaptic potential. b. the positive and negative ions neutralize each other. c. excitatory and inhibitory signals are summed in a receiving neuron. d. the adjacent neurons interact so that excitatory and inhibitory stimuli cancel each other out. e. all of these occur
An organic molecule contains two or more atoms of
A. carbon. B. hydrogen. C. oxygen. D. All of these answers are true.
Which of the following statements about salmonellosis is FALSE?
A) It is a bacterial infection. B) Severity of disease depends on number of organisms ingested. C) A healthy carrier state exists. D) The mortality rate is high. E) It is often associated with poultry products.