Vitamin B2 is also known as:

Question

BlackTom AI · Accepted Answer

Question restated: Vitamin B2 is also known as: 
Options: a) thiamin, b) riboflavin, c) folic acid, d) biotin

Option 1: thiamin. This is a real B vitamin (B1) involved in carbohydrate metabolism and energy production, but it is not the same as B2. Therefore this option is incorrect for the vitamin in question.

Option 2: riboflavin. This is the correct identification for vitamin B2. Riboflavin is the official name for B2 and serves as a precursor to the coenzymes FAD and FMN, which are essential in redox reactions in metabolism. This option accurately matches the vitamin being asked about.

Option 3: folic acid. Folic acid (vitamin B9) plays a key role in nucleotide synthesis and cellular replication, especially during periods of rapid growth, but it is not vitamin B2. This option is incorrect for the vitamin named in the question.

Option 4: biotin. Biotin is vitamin B7 and is important for carboxylation reactions in metabolism, such as fatty acid synthesis and gluconeogenesis. It is distinct from riboflavin, so this option is also incorrect for the vitamin described.

Summary reasoning: Among the listed choices, the only one that correctly names vitamin B2 is riboflavin, while thiamin corresponds to B1, folic acid to B9, and biotin to B7. The question tests recognition of the standard vitamin nomenclature rather than broader functions, so the correct match is riboflavin.

Vitamin B2 is also known as:单项选择题

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