Mod 1: The Background of Microbiology Flashcards
Immune mechanisms that “learn” to deal with specific invaders.
Adaptive Immune Response
A transmission mechanism in which the infectious agent is spread as an aerosol and usually enters a person through the respiratory tract.
Airborne Transmission
A substance produced by a B lymphocyte in response to a unique antigen, which it can then combine with to destroy or control it.
Antibodies
A group of immunocompetent cells that mediate cellular immune response by engulfing, processing, and presenting antigens to the T-cell receptor. Traditional antigen-presenting cells include macrophages, dendritic cells, Langerhans cells, and B lymphocytes.
Antigen-Presenting Cells (APCs)
A type of lymphocyte, developed in bone marrow, that circulates in the blood and lymph and, upon encountering a particular foreign antigen, differentiates into a clone of plasma cells that secrete antibody and a clone of memory cells that make the antibody on subsequent encounters.
B Cells
A vector that is essential in the life cycle of a pathogenic organism.
Biological Vector
A sheath or continuous enclosure around an organ or structure.
Capsule
A semipermeable phospholipid bilayer that separates the interior of cells from the outside environment and controls movement into and out of the cell.
Cell Membrane
A linear strand made of DNA that carries genetic information (genes).
Chromosomes
Threadlike projections from the free surface of certain epithelial cells used to propel or sweep materials across a surface.
Cilia
The mode of transportation of infectious pathogens from a source that is common to all the cases of a specific disease, by means of a vehicle such as water, food, air, or the blood supply.
Common Vehicle Transmission
Occurs when microorganisms are transferred from one infected person to another.
Contact Transmission
A gel-like matrix contained within the cell membrane that holds all of the cell’s internal substructures.
Cytoplasm
Organelle that consists of a network of channels that transport materials within the cell.
Endoplasmic Reticulum
A lipopolysaccharide that is part of the cell wall of gram-negative bacteria released after the cell’s death.
Endotoxins