Virus receptors are often not distributed uniformly over the surface of host cells, but are instead concentrated in lipid rafts.
Answer the following statement true (T) or false (F)
True
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Which of the following CANNOT grow indeterminately?
A) shoots B) adventitious roots C) stems D) leaves
Gene flow counters the effects of
a. natural selection. b. mutation. c. genetic drift. d. all of these. e. none of these.
As human civilization spread around the world, there were species that benefited greatly from new human-made habitats. However, generally with the expansion of human populations and agriculture,
A. there has been an increase in biological diversity. B. biological diversity levels drop dramatically. C. levels of biological diversity have remained the same, with human-associated organisms replacing the few natural species displaced. D. biological diversity has decreased for a short time, rebounding to higher levels relatively quickly.
In the designation Escherichia coli B, which part of the name indicates the genus?
Which part indicates the species? Which part indicates the strain?