The amount of energy needed to maintain basic metabolic functions is the
a. basal metabolic rate.
b. body mass index.
c. thermic effect of food.
d. basic body index.
e. metabolic ratio.
A
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A (n) ________ vector contains promoters that result in high-level transcription of the gene cloned within a multicloning site.
A. expression B. shuttle C. chimeric D. phage
Grassland expansion is associated with which of the following variables?
A. increased rainfall and decreased atmospheric CO2 B. increased rainfall and increased atmospheric CO2 C. decreased rainfall and decreased atmospheric CO2 D. decreased rainfall and increased atmospheric CO2 E. increased CO2 and increased sunlight availability
Osmosis refers to the diffusion of ________ across a semipermeable membrane
a. water b. all dissolved solutes c. any dissolved solute d. both water and any dissolved solute
Under the right conditions, which type of selection is most likely to lead to the formation of new species?
a) stabilizing b) frequency-independent c) frequency-dependent d) disruptive e) directional