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22 terms

What is Life? - Ch. 1 Plants

Vocabulary from the 'From Bacteria to Plants' textbook
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organisms
A living thing.
cell
The basic unit of structure and function in an organism.
unicellular
Made of a single cell.
multicellular
Consisting of many cells.
stimulus
A change in an organism's surroundings that causes the organism to react.
response
An action or change in behavior that occurs as a result of a stimulus.
development
The process of change that occurs during an organism's life to produce a more complex organism.
growth
The process of becoming larger.
spontaneous generation
The mistaken idea that living things arise from nonliving sources.
controlled experiment
An experiment in which all factors are identical except one.
autotrophs
An organism that makes its own food.
heterotrophs
An organism that cannot make its own food.
homeostasis
The maintenance of stable internal conditions.
classification
The process of grouping things based on their similarities.
taxonomy
The scientific study of how living things are classified.
binomial nomenclature
The system for naming organisms in which each organism is given a unique, two-part scientific name indicating its genus and species.
genus
A classification grouping that consists of a number of similar, closely related species.
species
A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.
evolution
The process by which species gradually change over time.
prokaryotes
An organism whose cells lack a nucleus and some other cell structures.
nucleus
The dense area in a eukaryotic cell that contains nucleic acids, the chemical instructions that direct the cell's activities.
eukaryotes
An organism whose cells contain nuclei.