a small non living particle that invades and than reproduces inside a living cell.
an organism that provides a source of energy or a suitable enviorment for a virus or for another organism to live.
an organism that lives on or in a host and causes harm to the host.
a virus that infects bacteria.
The entire contents of the cell, exclusive of the nucleus, and bounded by the plasma membrane.
a long whip like structure that helps a unicelluar organism move.
a form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size.
process by which a single parent reproduces by itself.
process in which genetic material from two parents combines and produces offspring that differ genetically from either parent.
the process by which a unicelluar organism transfers some of its genetic material to another unicelluar organism.
the process by which cells break down simple food molecules to release the energy they contain.
A small, rounded, thick-walled, resting cell that forms inside a bacterial cell.
organisms that break down wastes and dead organisms and return raw materials to the environment.
a disease that can pass from one organism to another.
a poison that can harm an organism.
medicine that kills or slows the growth of bacteria.
a substance that stimulates the body to produce chemicals that destroy viruses or bacteria
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