In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
--------
Question: Question: The binding of an allosteric activator to an allosteric enzyme typically results in: 
 Options:  <0> Decrease the Vmax. <1> The transition to a less soluble state. <2> Decrease the Km by its substrate. <3> The transition to hyperbolic kinetics. <4> The dissociation of its subunits.

Answer: chemistry


Question: Question: Aflatoxin B1 is a natural product that owes its toxicity to a product of its metabolism, very reactive, of the nature of: 
 Options:  <0> 1,2-Diol. <1> Quinonymine <2> Epoxide <3> Α, β-unsaturated carbonyl. <4> Radical hydroperoxide.

Answer: pharmacology


Question: Question: The mechanism of a homogeneous chemical reaction: 
 Options:  <0> It may include reaction intermediates that are not any of the reactants or any of the products. <1> It is completely defined by the chemical reaction as long as it reflects the correct stoichiometry of the reaction. <2> It is only defined for complex reactions in which the reactants go through many stages before becoming products. <3> It is totally independent of the law of reaction speed. <4> It does not depend on the temperature and is unique for the reaction between certain reagents.

Answer:
chemistry