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: 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.
chemistry

Question: Which of the following is currently the only contraindication for conservative surgical treatment in breast cancer?
Options: <0> Prior radiotherapy. <1> Tumor of 4 cm. <2> Axillary metastasis. <3> Multifocal tumor <4> Pregnancy of 32 weeks.
medicine

Question: Indicate which of the following disorders will occur with jaundice:
Options: <0> Dubin-Johnson syndrome. <1> Zellweger syndrome. <2> Hashimoto's thyroiditis. <3> Cushing's disease <4> Alcaptonuria.
pharmacology