If molecules are taken into the cell and encased in a single membrane sac called a vacuole, the transport method used is most likely
A. diffusion.
B. osmosis.
C. active transport.
D. endocytosis.
D. endocytosis.
Biology & Microbiology
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Ecologists determined that, regardless of the richness
of the ecosystem, energy passes through no more than __________ trophic levels. a. one or two b. two or three c. three or four d. four or five e. five or six
Biology & Microbiology
As used in mice, if this new technique is approved for use in humans, which of the following would be injected?
a. Neither mRNA nor antibodies b. mRNA c. Antibodies
Biology & Microbiology
Allopatric speciation requires:
a. complete geographic isolation. c. overlapping distributions. b. abutting distributions. d. differences in phenology.
Biology & Microbiology
Science is based on the assumption that nature behaves in a ________ and ________ manner.
Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology