What is Life? - Ch. 1 Plants

22 terms by mmalach

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Vocabulary from the 'From Bacteria to Plants' textbook

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.

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