Lectures

Vitamin B12

by Kevin Ahern, PhD
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    About the Lecture

    The lecture Vitamin B12 by Kevin Ahern, PhD is from the course Vitamins. It contains the following chapters:

    • Vitamin B12
    • Bitamin B12 - Propionic Acid Metabolism
    • Vitamin B12 and Methionine Metabolism

    Included Quiz Questions

    1. A vegetarian diet is a rich source of vitamin B12, followed by dairy products
    2. Vitamin B12, cobalamin, is a water-soluble vitamin essential for normal functioning of nervous system
    3. The prokaryotic organisms are capable of synthesizing vitamin B12, whereas single-celled and multicellular eukaryotic organisms are unable to synthesize it
    4. Vitamin B12 contains a biochemically rare element cobalt in the center of the planar tetra-pyrrole ring
    5. Vitamin B12 plays an essential role in the formation RBCs, DNA replication, fatty acid and amino acid metabolism in every cell of the animal body
    1. The deficiency of vitamin B12 in the body
    2. The high doses of vitamin B12 in the body
    3. The high doses of cobalamin in the body
    4. The high doses of vitamer in the body
    5. The high doses of hydroxocobalamin in the body
    1. Pernicious anemia — deficiency of vitamin C
    2. Methylcobalamin — present in the cytosol of cells
    3. N5-methyl tetrahydrofolate — source of extra carbon during methionine synthesis
    4. Vitamin B12 — handles the propionic acid metabolism in the cell
    5. Adenosylcobalamin — found in the mitochondria of the cells
    1. Methylmalonyl-CoA mutase
    2. Methionine synthase
    3. Catalase
    4. Glutamate carboxylase.
    5. Vitamin K epoxide reductase

    Author of lecture Vitamin B12

     Kevin Ahern, PhD

    Kevin Ahern, PhD


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