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  • Question
  • Some niacin is formed in the body from


  • Options
  • A. Liver
  • B. Skin
  • C. Appendix
  • D. None of the above

  • Correct Answer
  • Liver 

    Explanation

    Niacin is the name for vitamin(B3).

     

    Liver can produce small amount of niacin from tryptophan.

     

    To produce 1 mg of niacin we require 60 mg of tryptophan.

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    Biology problems


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    • 1. A sudden loss of memory is a symptom of

    • Options
    • A. Alzheimer's
    • B. Dementia
    • C. Amnesia
    • D. None of the above
    • Discuss
    • 2. Dysfunctional behaviors are maladaptive which means that they

    • Options
    • A. are medicated
    • B. interfere with everyday life
    • C. cause of stress
    • D. all of the above
    • Discuss
    • 3. Humans cannot digest cellulose because they
    • Discuss
    • 4. Select the correct statement about immune system?

    • Options
    • A. The causative agent in acquired immune deficiency syndrome (AIDS) is a virus that recognizes CD4 proteins
    • B. The most common form of immunodeficiency is graftversushost (GVH) disease
    • C. Severe combined immunodeficiency (SCID) disease is an acquired condition
    • D. Hodgkin's disease is a hereditary immunodeficiency found in children
    • Discuss
    • 5. Yeast used in making bread is a

    • Options
    • A. Fungus
    • B. Bacteria
    • C. Seed
    • D. Plant
    • Discuss
    • 6. Part of the plant where photosynthesis generally occurs

    • Options
    • A. roots
    • B. leaves
    • C. branches
    • D. flowers
    • Discuss
    • 7. Produces a usable form of energy for the cell

    • Options
    • A. Lysosomes
    • B. Vacuoles
    • C. Mitochondria
    • D. Ribosomes
    • Discuss
    • 8. Myopia is connected with

    • Options
    • A. Teeth
    • B. Eyes
    • C. Lungs
    • D. Skin
    • Discuss
    • 9. Name the part of neuron where information is acquired.

    • Options
    • A. Axon
    • B. Nucleus
    • C. Dendrite
    • D. None of the above
    • Discuss
    • 10. A man with colour blindness will see red as

    • Options
    • A. green
    • B. red
    • C. orange
    • D. yellow
    • Discuss


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