Characteristics of Life
Things that have all the characteristics of life
Organisms
required by everything you do; absorbed by the sun or by eating organisms
energy
one of the first people to classify organisms; placed all organisms into the groups "plants" or "animals"
a classification category that ranks above a phylum and below a domain
kingdom
uses light and lenses to enlarge an image of an object
light microscope
the smallest unit of life
cell
process by which one organism makes one or more new organisms
reproduction
Swedish physician that classified organisms based on similar structures. Used two main groups called "kingdoms".
Carolus Linnaeus
a classification category that ranks above a kingdom
domain
uses more than one lens to magnify an object
compound microscope
living things that are made of two or more cells
multicellular
changes that occur in an organism during its lifetime
development
American biologist who proposed a five-kingdom system for classifying organisms
process that gives each organism a two-word scientific name
binomial nomenclature
uses a magnetic field to focus a beam of electrons through an object or onto an object's surface
electron microscope
stimuli
livings things have structures with specific functions
organization
Current process for classifying living things
systematics
a group of organisms that have similar traits and are able to produce fertile offspring
species
usually used to study extremely small things such as cell structure
TEM
A unicellular organism splits in two to create two new organisms. This is an example of ____________.
reproduction
A structure called a contractile vacuole collects and pumps excess water out of the cell. This is an example of ____________.
homeostasis
English scientist who observed and named cells
Robert Hooke
Two organisms have the same characteristics, but cannot produce fertile offspring. These organisms might be from the same __________.
genus
usually used to study an object's surface
SEM