Anatomy and Physiology

    Cardiovascular System
    Which antigens would a person whose ABO blood group is “AB+” have on their red blood cells?
    The AB blood group has both antigens A and B on the membrane of their RBC and rhesus antigen D (i.e. they are positive for D).
    Author: rikazzz Comment
    Cells and Tissues
    Which organelle is the site of ATP production?
    The mitochondria are where ATP is produced.
    Author: rikazzz Comment
    Gastrointestinal System
    The process of hydrolysis may be represented by which of the following?
    Hydrolysis refers to using a water molecule to split a larger molecule in smaller ones. Here a disaccharide is being split into two monosaccharide molecules.
    Author: rikazzz Comment
    Cardiovascular System
    When performing cardiopulmonary resuscitation (CPR), why do you use the “heel” of the hand rather than the whole palm and fingers?
    Maximum force during CPR is determined by the strength of the resuscitator. Maximum pressure in addition depends on minimising the area upon which the force is being applied. The heel of the hand allows a small area to be used.
    Author: rikazzz Comment
    Endocrine System
    What is a collective name for hormones that are derived from the amino acid tyrosine?
    The “catechol” group is a benzene ring with two hydroxyl groups attached. The amine is NH2. They are made from tyrosine by removing the carboxylic acid group and adding a second hydroxyl group.
    Author: rikazzz Comment
    Endocrine System
    Which of the following could be a definition of a hormone?
    Hormones are also known as circulating hormones, meaning they are transported in the blood.
    Author: rikazzz Comment
    Cells and Tissues
    Which of the following is NOT a type of cell?
    A ribosome is a cell organelle, not a cell type.
    Author: rikazzz Comment
    Chemistry for Physiology
    Fluid and electrolyte balance in the body is maintained by which of the following?
    The nephron is the functional unit of the kidney that does this job.
    Author: rikazzz Comment
    Skeleton and Joints
    What are the cells that are found in the lacunae of compact bone called?
    Osteocytes develop from osteoblasts.
    Author: rikazzz Comment
    Measurement, Errors, Data and Unit Conversion
    One millilitre of water has a mass of 1.00 g. Which of the following sets of three measurements of the mass of 1 ml of water is the most precise set?
    Precision refers to the repeatability of the measurement. In choice B, all measurements are the same so are precise.
    Author: rikazzz Comment