Which of the following is a nonspecific cellular and vascular reaction to any tissue trauma?
a. Physical or surface barriers
b. Immune response
c. Inflammation
d. Normal flora
c. Inflammation
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Which of the following describes the mechanism by which a plant stem grows toward light?
A. The plant seeks light in order to maximize photosynthesis B. nerve like impulses stimulate contractile cells on the lighted side of the stem C. cells on the dark side of he stem elongate more than those on the lighted side D. THe plant grows into an open area where its leaves will not be shaded by competing plants E. the greater energy supply on the lighted side of the stem stimulates metabolism and growth on that side
In birds, if the offspring require extensive care, usually involving both the male and female, they are called
A. sympatric species. B. altricial species. C. precocial species. D. semelparous species. E. iteroparous species.
In eukaryotic cells, transcription occurs
A. on spliceosomes. B. on the surface of the plasma membrane. C. on the surface of the nuclear membrane. D. inside the nucleus. E. on ribosomes.
The membranes of psychrophilic bacteria have relatively high levels of ________ fatty acids, which allow them to remain semifluid at cold temperatures.
A. unsaturated B. sterol C. saturated D. aromatic