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  • #25891

    Nicolas Sanchez

    A student carried out tests to find out which molecules were present in a sample of urine from a human male. The student recorded the presence of large protein molecules in the urine, and suggested that this indicated that the kidney was not functioning correctly.
    Which of the following could have resulted in a high concentration of protein in the urine sample?

    1 damage to cell membranes between the blood vessels and the Bowman’s capsule
    2 a reduced rate of active transport and selective re-absorption from the nephron
    3 Cells in the collecting duct do not have receptors to bind to antidiuretic hormone (ADH) and so are unable to respond to the hormone.

    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 2019 Section 2 Q25

  • Paris

    July 21, 2021 at 5:47 pm
    Down Accepted answer

    Peeing proteins is not good. It signals that there is a problem in the kidney. From the options given, the only one that might explain how proteins have escaped from the blood and into the filtrate is that the cell membranes at the Bowman’s capsule have been damaged thereby letting proteins slip through. Statement 2 is irrelevant since the nephron does not reabsorb proteins and ADH has nothing to do with proteins.

    The answer is B.