Cells and Tissues

    Cells and Tissues
    What is the difference between “loose” connective tissue (CT) and “dense” connective tissue?
    The preponderance of fibres is what makes the CT “dense”. Cartilage is classified as supportive CT.
    Author: rikazzz Comment
    Cells and Tissues
    Why does the plasma membrane of a cell present a barrier to the movement of electrolytes through it?
    Electrolytes, being charged particles, are not able to dissolve their way through the lipid plasma membrane (which is non-polar). Hence it is a barrier to them.
    Author: rikazzz Comment
    Cells and Tissues
    Choose the tissue below that is NOT one of the four primary types of body tissue.
    Osseous tissue (or bone) is a connective tissue.
    Author: rikazzz Comment
    Cells and Tissues
    Which of the following enables ions such as sodium to cross a plasma membrane?
    One function of integral protein in the PM is to form channels to allow for the passage of ions.
    Author: rikazzz Comment
    Cells and Tissues
    What is the purpose of meiosis? To produce:
    Meiosis produces sperm or egg so these must have half the complement of chromosomes (be haploid) to allow for the full complement to be present (and not more!) when sperm combines with egg.
    Author: rikazzz Comment
    Cells and Tissues
    Which of the following is NOT found in the plasma membrane?
    Endoplasmic reticulum is an organelle and found within the cell.
    Author: rikazzz Comment
    Cells and Tissues
    Which structure within the cell produces ATP (adenosine triphosphate)?
    This is a basic function of mitochondria. All other answers are wrong.
    Author: rikazzz Comment
    Cells and Tissues
    A particular tissue contains cells that are widely separated from each other and surrounded by a tissue component that is not cellular. What type of tissue conforms with this description?
    Connective tissue consists of a noncellular matrix in which are distributed cells that are not adjacent to each other.
    Author: rikazzz Comment
    Cells and Tissues
    What are the primary types of body tissue?
    These are the four primary types. Blood is not a “type” of tissue.
    Author: rikazzz Comment
    Cells and Tissues
    What is the major component of the plasma membrane of a cell?
    Cholesterol and proteins are also present in the plasma membrane but as more minor components.
    Author: rikazzz Comment