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.

Q: Question: The hepatic synthesis of methionine from homocysteine ​​requires: 
 Options:  <0> Methylmalonyl-CoA mutase. <1> Methylcobalamin. <2> 5'-Adenosilcobalamin. <3> Coenzyme B6. <4> Methionine adenosyl transferase.

A: chemistry
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Q: Question: The blood flow velocity is maximum in: 
 Options:  <0> Great arteries <1> Distribution arteries. <2> Arterioles <3> Capillaries <4> Venules

A: biology
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Q: Question: A biosensor consists of: 
 Options:  <0> A receiver, a transducer, and an enzymatic brand. <1> A receptor and an enzymatic brand. <2> A transducer and an enzymatic brand. <3> A receiver and a transducer. <4> A receptor and an antibody.

A:
chemistry
****