If drugs are less effective when taken together than when each is taken separately, they are called

A. energetic.
B. antagonistic.
C. additive.
D. synergistic.


B

Biology & Microbiology

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The soils in which most plants do best are ____

a. mixtures of mainly sand and silt b. sandy soils c. soils made mostly of humus d. clay soils e. loams

Biology & Microbiology

Substrate level phosphorylation ____

a. involves the direct transfer of a phosphate group from a substrate b. requires the presence of oxygen c. requires the presence of NADH d. produces most of the ATPs during aerobic respiration e. is not part of fermentation pathways

Biology & Microbiology

The most complex wayfinding mechanism is ____, in which animals use both a compass and a mental

map of the area.

a. piloting b. orienteering c. compass orientation d. migration e. navigation

Biology & Microbiology

In a cell, the concentration of glucose-6-phosphate is 83 ?M and of fructose-6-phosphate is 14 ?M. The ?G°' = 410 cal/mol for the conversion of glucose-6-phosphate to fructose-6-phosphate

Based upon this information, the ?G' for this reaction (in cal/mol) is A) ?644. B) ?63.7. C) 0. D) 27. E) 644.

Biology & Microbiology