Organism
something that has all the characteristics of life
Cell
smallest unit of life
Unicellular
a living thing that is made up of only one cell
Multicellular
living things that are made of two or more cells
homeostasis
an organism's ability to maintain steady internal conditions when outside conditions change
binomial nomenclature
a naming system that gives each organism a two-word scientific name
Species
A group of organisms that are closely related and can mate to produce fertile offspring
Genus
A group of similar species
dichotomous key
a series of descriptions arranged in pairs that leads the user to the identification of an unknown organism
Cladogram
a branched diagram that shows the relationship among organisms, including common ancestors
light microscope
a microscope that uses light and lenses to enlarge an image of an object
compound microscope
a light microscope that uses more than one lens to magnify an object
electron microscope
a microscope that uses a magnetic field to focus a beam of electrons through an object or onto an object's surface