Coenzymes and Deficiencies in Metabolism
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Questions and Answers

Which coenzyme is NOT mentioned as a hydrogen carrier?

  • Adenosine triphosphate (ATP) (correct)
  • Flavin mononucleotide (FMN)
  • Flavin adenine dinucleotide (FAD)
  • Nicotinamide adenine dinucleotide (NAD) (correct)
  • Which statement best describes the content related to coenzymes?

  • Coenzymes are enzymes that catalyze reactions.
  • Coenzymes act as the primary source of hydrogen in the body.
  • Coenzymes are only involved in metabolic pathways.
  • Two important coenzymes acting as hydrogen carriers are FMN and FAD. (correct)
  • What role do FMN and FAD play in the body?

  • They act as primary energy sources.
  • They serve as hydrogen carriers. (correct)
  • They control the pH levels in the mouth.
  • They function as building blocks for proteins.
  • Which of the following is NOT a manifestation of deficiency based on the context?

    <p>Enhanced energy levels</p> Signup and view all the answers

    Which of the following statements regarding hydrogen carriers is FALSE?

    <p>They are exclusively found in plant cells.</p> Signup and view all the answers

    What amino acid is primarily associated with the formation of Vitamin B3 in the body?

    <p>Tryptophan</p> Signup and view all the answers

    Which condition is primarily associated with a deficiency of Vitamin B3?

    <p>Pellagra</p> Signup and view all the answers

    What are the two important co-enzymes derived from Vitamin B3 that act as hydrogen carriers?

    <p>NAD and NADP</p> Signup and view all the answers

    Which group is most likely to experience Vitamin B3 deficiency due to dietary habits?

    <p>People using maize flour as a staple food</p> Signup and view all the answers

    What is the primary source of Vitamin B3 synthesized in the body?

    <p>Synthesis from tryptophan</p> Signup and view all the answers

    Study Notes

    Vitamin B2 (Riboflavin)

    • Active forms include Flavin mononucleotide (FMN) and Flavin adenine dinucleotide (FAD).
    • Acts as co-enzymes in hydrogen transfer processes.
    • Deficiency leads to seborrheic dermatitis, a skin condition.

    Vitamin B3 (Nicotinic Acid or Pellagra)

    • Formed from the amino acid tryptophan in the body.
    • Active co-enzymes are Nicotinamide adenine dinucleotide (NAD) and Nicotinamide adenine dinucleotide phosphate (NADP).
    • Pellagra manifests as dermatitis, diarrhea, and dementia, often affecting those consuming maize flour lacking tryptophan and nicotinic acid.
    • Symptoms can include burning sensations in the feet.

    Vitamin B6 (Pyridoxine)

    • Active form of vitamin B6 is Pyridoxal phosphate (PLP).
    • PLP is crucial for numerous biochemical reactions in the body.

    Folic Acid (Vitamin B9)

    • Active form is Tetrahydrofolate (FH4).
    • Essential for red blood cell formation and various metabolic processes.

    Vitamin B12 (Cobalamins - Anti-pernicious Anemia Factor)

    • Functions include aiding in the construction of genetic material (nucleic acids).
    • Supports the development of normal red blood cells.
    • Essential for the maintenance and health of the nervous system.

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    Description

    This quiz covers the role of key coenzymes FMN and FAD in metabolic processes, focusing on their functions as hydrogen carriers. Additionally, it discusses the manifestations of deficiencies associated with these important molecules. Test your knowledge on the biochemical significance of these compounds and their impact on health.

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