Cells and Tissues

    Cells and Tissues
    What are generally referred to as organelles?
    Organelles are not glands. They are structures within a cell.
    Author: rikazzz Comment
    Cells and Tissues
    Choose the tissue below that is one of the four primary types of body tissue.
    Epithelial is a major tissue type (as is muscle, nervous and connective).
    Author: rikazzz Comment
    Cells and Tissues
    Facilitated diffusion differs from active transport because facilitated diffusion:
    Diffusion always refers to movement from high to low concentration (without energy expenditure). Facilitated refers to the assistance provided by a transport molecule that is designed for the purpose.
    Author: rikazzz Comment
    Cells and Tissues
    Choose the membrane that is NOT a serous membrane.
    The lamina propria is a “basement membrane” attached to epithelial tissue. The others are serous membranes.
    Author: rikazzz Comment
    Cells and Tissues
    In which organelle of the cell do most aerobic respiration reactions happen?
    Mitochondria are the site of aerobic respiration. That is, the production of ATP from pyruvic acid (via glucose) and oxygen.
    Author: rikazzz Comment
    Cells and Tissues
    One of the functions of integral proteins in cell membranes is to:
    Some proteins form channels which allow molecules and ions to enter the cell.
    Author: rikazzz Comment
    Cells and Tissues
    The process of “active transport” through a membrane may be described by which of the following?
    Energy (ATP) is required to force molecules against their concentration gradient.
    Author: rikazzz Comment
    Cells and Tissues
    What term is used to describe the movement of dissolved particles along (or down) their concentration gradient?
    Following the concentration gradient is a passive process. Choice C applies only to water molecules.
    Author: rikazzz Comment
    Cells and Tissues
    Which of the following cells are found in cartilage?
    “Chondros” means cartilage in Greek (!).
    Author: rikazzz Comment
    Cells and Tissues
    How many nucleotides are required to code for a single amino acid?
    A sequence of three nucleotides constitutes a codon. Each codon is specific for one of the 20 amino acids.
    Author: rikazzz Comment