Final answer:
In purine biosynthesis, the term 'purinosome' does not refer to the multienzyme complex involved, but to a cellular body where enzymes are concentrated.
Explanation:
The statement that the multienzyme complex involved in purine biosynthesis in vertebrates is called a purinosome is FALSE. In humans, the bifunctional purine biosynthesis protein PURH contains activities of the last two enzymes, not a purinosome. The purinosome is actually a cellular body where purine biosynthesis enzymes are concentrated, but it is not the multienzyme complex itself.
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