Viruses that infect ________ have no known extracellular state.
A. animals
B. bacteria
C. fungi
D. plants
E. both fungi and plants
Answer: C
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Uniform spacing patterns in plants such as the creosote bush are most often associated with _____
A) chance B) patterns of high humidity C) the random distribution of seeds D) competitive interaction between individuals of the same population E) the concentration of nutrients within the population's range
The basic unit in ecology is the
A) ecosystem. B) gene. C) individual. D) species.
Which of the following is NOT a function of the respiratory system?
A) vocalization B) electrolyte balance of blood C) enhancing venous return D) heat loss E) acid-base balance of blood
Which receptor transduces when it changes shape and its plasma membrane becomes more permeable to sodium or potassium ions?
A) pain receptor B) thermoreceptor C) mechanoreceptor D) chemoreceptor