Viruses, Bacteria, and Infectious Diseases
Terms in this set (37)
small, nonliving particle that invades and then reproduces inside a living cell
A living thing that provides a source of energy for a virus or an organism.
organisms that live on or in a host and cause harm to the host
a virus that infects bacteria (bacteria eater)
viruses that enter cells and immediately begin to multiply
viruses that enter cells and then "hide" for awhile before they become active
single-celled organism whose genetic material is not contained in a nucleus (prokaryote)
A long, whiplike structure that extends out through the cell membrane and cell wall, used to propel the organism.
A process in which one cell divides to form two identical cells.
A reproductive process that involves only one parent.
A reproductive process that involves two parents who combine their genetic material to produce a new organism.
when one organism transfers some of its genetic material through a thin, threadlike bridge that joins the two cells
A small, rounded, thick-walled, resting cell that forms inside a bacterial cell. It contains the cell's genetic material and some of its cytoplasm.
A process where food is heated to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food.
organisms that break down large chemicals in dead organisms into smaller chemicals
illnesses that pass from one organism to another. Infectious diseases can spread through contact with an infected person, a contaminated object, an infected animal, or an environmental source
A chemical that can kill bacteria without harming a person's cells.
when some bacteria are able to survive in the presence of an antibiotic
A substance that stimulates the body to produce chemicals that destroy viruses or bacteria.
Replication is the process of making a replica (a copy) of something. A replication is a copy. In microbiology replication might be a method of reproducing.
A method of therapy that involves adding genetic material (DNA) to a virus that then can "deliver" that genetic material to certain cells
organisms whose genetic material is not contained inside a nucleus
A gelatinous (gel-like) envelope surrounding a bacterial cell that protects the bacteria from chemicals and from drying out too easily
A colony of prokaryotes that is stuck to a surface such as a rock or a host's tissues. For example: the sticky plaque that collects on your teeth between brushings is a biofilm
An organism that spreads pathogens from host to host. For example, a deer tick is a vector for lyme disease because it can transmit the disease from one host to another host.
first line of defense
both physical and chemical barriers that are always ready and prepared to defend the body from infection
a sticky, moist substance that covers mucous membranes
tiny finger-like projections. They move in waves and sweep mucus and trapped pathogens toward body openings.
a living thing or virus that causes disease. Pathogens are commonly called "germs" but are actually viruses, bacteria, fungi, and protozoa.
simple eukaryotic organisms that consist of one or more cells. They include mushrooms and yeasts. Human diseases caused by fungi include ringworm and athlete's foot.
one-celled organisms with a nucleus, making them eukaryotic organisms.
a large protein that binds to an antigen
A protein that is recognized as foreign by the immune system.
white blood cells that engulf targeted antigens and destroy them
being highly resistant to a disease
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