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18 terms

John's Virus and Bacteria Terms

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Virus
is a tiny nonliving particle that enters and then reproduces inside a living cell.
Host
is an organism that provides a source of energy for a virus or another organism.
Parisite
an organism that lives on or in a host and causes it harm
Bacteriophage
is a virus that infects bacteria
Bacteria
single-celled organisms that lack a nucleus; prokaryotes
Cytoplasm
the region of the cell within the membrane that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus
Ribosome
a tiny structure in the cytoplasm of a cell where proteins are made
Flagellum
a long, whiplike structure that helps a cell to move
Binary Fission
a form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size
Asexual Reproduction
process by which a single parent reproduces by itself
Sexual Reproduction
process by which cells from two different parents unite to produce the first cell of a new organism
Conjugation
form of sexual reproduction in which paramecia and some prokaryotes exchange genetic information
Endospore
a small asexual spore that develops inside the cell of some bacteria and algae
Pasteurization
a process of heating food to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food
Decomposer
organism that breaks down and obtains energy from dead organic matter
Respiration
the process by which cells break down simple food molecules to release the energy they contain
Antibiotic
a chemical substance derivable from a mold or bacterium that kills microorganisms and cures infections
Infectious Disease
Illness that passes from one organism to another