This illustration shows the mechanism of
a. simple diffusion.
b. bulk flow.
c. endocytosis.
d. facilitated diffusion.
e. an active transporter.
Answer: c
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Although there are other classification schemes for prokaryotes, the one used in Bergey's Manual is currently considered by most microbiologists to be the most accurate.
Answer the following statement true (T) or false (F)
It is important to differentiate white blood cells in a preliminary direct smear because
a. the type of white blood cell present defi-nitively indicates whether or not an infec-tion is bacterial. b. neutrophils are the only white blood cell present during bacterial infections. c. it is not appropriate, because various types of white blood cells are indicative of dif-ferent bacterial infections. d. white blood cells are not noted on prelim-inary direct smear results.
In the experiment with peacock butterflies, the working hypothesis is that
a. silence confuses both predator and prey. b. making sounds can provide a selective advantage to the prey. c. birds are capable of learning. d. birds are agents of evolution. e. unpalatable species display distinctive wings.
Succession leads to the establishment of a(n)
A) community that consists of only one or two dominant species. B) mature community. C) ecosystem. D) community that has a limited number of natural resources. E) community that is inefficient in terms of its use of energy and nutrients.