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  • #25904

    Nicolas Sanchez

    Scientists are using human stem cells to develop treatments for a wide variety of health conditions.
    Two types of stem cell that are available for this work are:
    • stem cells collected from an early embryo
    • bone marrow stem cells collected from an adult
    Which of the following statements is/are correct?
    (Assume that no mutations occur.)

    1 Both of these types of stem cell can divide producing daughter cells. Each daughter cell will contain one haploid copy of the donor’s genome.
    2 The stem cells collected from an embryo are able to differentiate into a wider variety of specialised cells than the adult bone marrow stem cells.
    3 The use of stem cell therapy to treat a medical condition can increase the risk of a person developing cancer.

    A. none of them
    B. 1 only
    C. 2 only
    D. 3 only
    E. 1 and 2 only
    F. 1 and 3 only
    G. 2 and 3 only
    H. 1, 2 and 3

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  • BMAT 2020 Section 2 Q5

  • Paris

    July 21, 2021 at 6:09 pm
    Down Accepted answer

    1. Stem cells will divide using mitosis. The daughter cells will be diploid. This is false.

    2. This is true. The adult stem cells have less differentiation variety than the embryonic stem cell. This is the case since the bone marrow stem cells have undergone some specialisation while the stem cells from the embryo are completely undifferentiated. This is correct.

    3. This is a fact. This is correct.

    The answer is G.