Sometimes drugs, such as phenobarbital, are given in a higher dose as a loading dose and then tapered back to a maintenance dose. this the drug to accumulate to a therapeutic level in the body until the concentration plateaus. when this occurs, the drug has reached which of the following?

a. nadir
b. steady state
c. half-life
d. bioavailability

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.