About “dose-reaction” relationship, which one is the correct description of “reaction”?() A: health effect B: the examine of biochemistry C: the change of indexes D: occurrence rate of health event

The<br/>side effects of the drug are() A: A<br/>reaction caused by an overdose B: A<br/>reaction to long-term medication C: At<br/>treatment dose, the drug produces a response unrelated to the purpose<br/>of treatment D: The<br/>toxicological effect of a drug, which is an unknown reaction E: It<br/>is a heterogenous reaction associated with heredity

Efficacy means A: the concentration at which the drug elicits 50% of its maximal effect B: the maximal effect produced by the drug C: the dose at which 50% of subjects exhibit a therapeutic response to a drug D: the dose at which 50% of subjects dies E: the dose at which 50% of subjects exhibit a toxic reaction

If the reaction of 2A+B → C is a elementary reaction, which choice listed below is true? A: it is a second order reaction B: it is a slow reaction C: it is a second order reaction to B D: it is a second order reaction to A

ED50 means A: Median effective concentration B: Median toxic dose C: Median lethal dose D: Median effective dose

First order processes A: only apply to enzyme-mediated reactions B: are characterized by high rates of reaction when the concentrations of reacting substances are high and vice versa C: give rise to dose dependent kinetics D: can properly be described in terms of t1/2

The rate constant of the reaction changes as the reaction proceeds.

For an elementary reaction, the reaction order is same to the molecularity.

Which<br/>of the following reactions can occur in tropane alkaloids?() A: vitali<br/>reaction B: complexation<br/>reaction C: coordination<br/>reaction D: precipitation<br/>reaction E: condensation<br/>reaction

It is known that the chemical reaction A + B → C + D is a elementary reaction, then it can be inferred that the total order of this reaction is 2.