Which of the following contain a metal atom? (a)Riboflavin (b)vitamin ...
Answer:
Metal atoms are typically found in the form of metal ions in biological molecules. Among the vitamins mentioned, only vitamin B12 contains a metal atom.
Vitamin B12:
- Vitamin B12 contains cobalt, which is a transition metal.
- Cobalt is essential for the formation of red blood cells and the proper functioning of the nervous system.
- The metal ion is coordinated to a corrin ring, which is a tetrapyrrole macrocycle.
Riboflavin:
- Riboflavin, also known as vitamin B2, does not contain a metal atom.
- It is a water-soluble vitamin that functions as a cofactor for various enzymes involved in energy metabolism.
Vitamin B6:
- Vitamin B6, also known as pyridoxine, does not contain a metal atom.
- It is a water-soluble vitamin that plays a role in amino acid metabolism, neurotransmitter synthesis, and hemoglobin synthesis.
Vitamin A:
- Vitamin A does not contain a metal atom.
- It is a fat-soluble vitamin that is essential for vision, immune function, and cell growth and differentiation.
In summary, only vitamin B12 contains a metal atom, which is cobalt. Riboflavin, vitamin B6, and vitamin A do not contain metal atoms.
Which of the following contain a metal atom? (a)Riboflavin (b)vitamin ...