Chemistry for Physiology

    Chemistry for Physiology
    Which of the following statements about an “osmole” is correct? An osmole is the:
    An osmole refers to the number of solute particles (ions or molecules) that exist in solution, after a substance has dissolved.
    Author: rikazzz Comment
    Chemistry for Physiology
    If a blood sample has a pH of 7.25, which of the following is NOT true?
    pH must be less than 7.0 for acidic to be true. The condition certainly is an acidosis.
    Author: rikazzz Comment
    Chemistry for Physiology
    What is the percentage concentration of glucose if 80 gram of glucose is dissolved in 1 L of solution?
    80 g per 1000 ml = 8 g per 100 ml = 8%
    Author: rikazzz Comment
    Chemistry for Physiology
    If a semipermeable membrane separates two aqueous solutions with different osmotic pressures, what will be the direction of water flow between solutions? From:
    Lower osmotic pressure means a lower solution concentration (and a higher concentration of water molecules). Water moves from the dilute solution into the more concentrated one.
    Author: rikazzz Comment
    Chemistry for Physiology
    A hydrocarbon molecule which contains at least one double bond could be an example of which type of compound:
    Alkenes contain at least one double bond between carbon atoms. Alkanes have only single bonds, while alkynes have at least one triple bond between carbon atoms.
    Author: rikazzz Comment
    Chemistry for Physiology
    An acid may be defined as a substance that:
    An acid produces hydronium ions. Choice A defines a strong acid (but not a weak one).
    Author: rikazzz Comment
    Chemistry for Physiology
    Which one of the following is NOT a steroid compound?
    Stearic acid is a fatty acid. The sex hormones estrogen and testosterone are derived from cholesterol.
    Author: rikazzz Comment
    Chemistry for Physiology
    The one medicine may have many names. What is the “generic name” of a medicine?
    A medicine has only one “generic” name, but each manufacturer will give it their own “trade” name. Choice A refers to the naming of a class of drugs each of which may be a different molecule.
    Author: rikazzz Comment
    Chemistry for Physiology
    Osmosis involves movement of water from where the:
    In osmosis water molecules flow down their concentration gradient (and from weaker solutions to more concentrated ones).
    Author: rikazzz Comment
    Chemistry for Physiology
    Given that the atomic mass of nitrogen is 14 and that of hydrogen is 1, what is the mass in grams of 1 mole of ammonia (NH3)?
    From the formula, there is one N and three H atoms. So (1 × 14) + (3 × 1) = 17.
    Author: rikazzz Comment