Glossary

                                                                                
Antibiotic:
A chemical ammunition which kills bad boy bacteria.

Asexual:
Reproduction that occurs without the union of male and female gametes, as in budding.

Bacteria:
Microscopic one-celled organism; can't be seen without a microscope.

Bacteria, Harmful:
Bad-boy bacteria that spread disease, damage roads, spoil food, and water, etc.

Bacteria, Helpful:
Good-boy bacteria that are necessary for Life on Earth (i.e. production of food, oxygen, antibiotics, fuel, environmental clean-up of oil and pesticides, etc.

Budding:
To reproduce asexually by forming a bud; common in yeast

Chlorophyll:
Green plant pigment found in plants and cyanobacteria.

Chloroplast:
A chlorophyll containing structure found in green plants and cyanobacteria cells

Colony:
A group of like cells clustered together

Cyanobacteria:
Often called "blue green bacteria", a bacteria that lives in the water and makes their own food (photosynthesis); usually one-celled, can grow in colonies large enough to see without a microscope.

Decomposer:
Bacteria and fungi that breakdown dead plants and animals and use them for food.

Diatomaceous earth:
A powdery deposit composed of the dead shells of diatoms found in toothpaste and car polish.

Eukaryote:
Eukaryote cells contain a true nucleus and other cell organelles; often complex in form; protists, plants, plants, and animals.

Fermentation:
Energy releasing process in yeast which breaks down sugars into carbon dioxide and alcohol.

Filament:
A chain-like series of cells.

Fungus (Kingdom Fungi):
Fungi are complex organisms that have NO chlorophyll ( pigment used by plants to survive).

Germ:
A microbe that usually causes disease.

Infection:
Invasion and multiplication of microbes in body tissues.

Lichen:
A fungus and an alga living together (symbiosis).

Microbe:
An organism so small you can see it only with a microscope; a minute living organism.

Microbiology:
The study of microbes.

Microorganism:
A microbe.

Microscope:
An optical instrument used to magnify tiny objects that are too small to be seen by the eye.

Mildew:
Any fungus that attacks plants, paper, clothes and other objects (like leather shoes inside a dark closet), and forms a powdery whitish growth.

Mold:
Any fungus that feeds on live, dead or decaying matter; and forms a cottony growth.

Nucleus:
Cell structure that directs all the activities of the cell.

Organelle:
A structure within a cell, such as a mitochondrion, vacuole, or chloroplast, that performs a specific function.

Oxygen:
A nonmetallic element; 21 percent of the atmosphere is diatomic gas, O2, found in the compound water. It is essential for plant and animal respiration, and is required for nearly all combustion.

Prokaryote:
Contain no nucleus or other cell organelles; often simple in form like bacteria.

Protist (Kingdom Protista):
Mostly one-celled micro-organisms with a nucleus and other cell organelles,includingplant- and animal-like organisms (i.e. paramecia, amoebas,diatoms,euglenas, and many more).

Salmonella:
A bacteria of the genus Salmonella, which causes food poisoning in human beings and in domesic animals.

Silica:
A white crystal compound used to make glass.

Symbiosis:
A close, relationship between two or more different organisms of different species that may or may not benefit each member.

Yeast:
A one-celled fungi that breaks down sugar into carbon dioxide and alcohol; asexual reproduction by budding.

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