22 terms

Bacteria Unit

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Vaccine
A substance that stimulates the body to produce chemicals that destroy viruses or bacteria.
Parasite
An organism that lives in or on a host and causes harm to the host.
Conjugation
is a simple form of sexual reproduction in which a unicellular organism transfers some of its genetic material to another unicellular organism.
Ribosomes
The small organelles in cells that produce proteins.
Endospores
A small, rounded, thick-walled, resting cell that forms inside a bacterial cell to protect it from unfavorable conditions.
Active Virus
The virus's genetic material takes over cell functions, and the cell quickly begins to produce the virus's proteins and genetic material. Then these parts assemble into new viruses. It destroys the host cell.
Hidden Virus
A hidden virus enters a host cell, its genetic material becomes part of the cell's genetic material. The virus does not appear to affect the cell's functions and may stay in this inactive state for years.
Cytoplasm
The gel like fluid found inside the cell membrane. It supports the organelles.
Antibiotic
A chemical that can kill bacteria without harming the body.
Host
An organism that provides a source of energy or a suitable environment for a virus or another organism to live.
Decomposers
Bacteria that break down large chemicals in dead organisms into small chemicals.
Respiration
The process of breaking down food to release energy.
Flagellum
A whiplike structure that helps a bacteria or protist move.
Bacteriophage
A virus that attacks and destroys bacteria.
Toxin
A poison produced by some bacteria that can harm an organism.
Binary Fission
A form of asexual reproduction in which one cell divides to form two identical cells.
Prokaryotes
Cells that do not have a nucleus.
Eukaryotes
Cells that do have a nucleus.
Sexual Reproduction
The process of reproduction when two parents combine their genetic material to produce a new organism that is different from both parents.
Asexual Reproduction
The process of reproduction when one parent splits in half to produce a new organism that is identical to the parent.
Bacteria
A living microscopic, unicellular, prokaryote, that contains genetic material. It has a cell wall, comes in 3 common shapes, and may move itself with a flagellum. It reproduces asexually or sexually, can be either a heterotroph or an autotroph and it can be helpful or harmful.
Virus
A microscopic, nonliving particle that invades a living host cell and then reproduces and destroys it. It has genetic material and causes diseases.