Many angiosperm species have ____ animal pollinators
a. competed with
b. parasitized
c. been driven to extinction by
d. coevolved with
e. antagonistic relationships with
D
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Recall that archaea and bacteria used to be grouped in the same category. How were archaeons first distinguished from other prokaryotes?
A. through differences in cell size and shape B. through the fact that archaeons have linear and not circular chromosomes C. through differences in ribosomal RNA sequences D. through the lack of horizontal gene transfer in archaeons E. through the observation that archaea cell size is independent of diffusion
If 1000 millimoles make up a mole, how many grams of magnesium (Mg), which has an atomic mass of 24.305, will make a solution that contains 150 µmol of Mg?
A. 3.6mg. B. 2.4mg. C. 0.24mg. D. 36mg.
Cytotoxic T cells target
A) cancer cells and virally infected cells. B) skin cells and blood cells. C) bacterial cells and fungal cells. D) B cells and macrophages.
What will happen to the pH inside a thylakoid that is exposed to light?
A. It will not change. B. It will increase. C. It will decrease.