Multiple choice

Which is a key function of thiamin?

  1. Facilitates calcium absorption

  2. Keeps cell membranes from being oxidized

  3. Facilitates energy metabolism

  4. Improves vision

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Thiamin (vitamin B1) acts as a coenzyme (thiamin pyrophosphate) in the metabolism of carbohydrates and branched-chain amino acids, thereby facilitating energy production. Calcium absorption is facilitated by vitamin D, membrane protection by vitamin E, and vision by vitamin A.