Several criteria, few of which are widely accepted, have been proposed to define what constitutes an organism. Among the most common is that an organism has autonomous reproduction, …

ORGANISM definition: a form of life composed of mutually interdependent parts that maintain various vital processes. See examples of organism used in a sentence.

Apr 28, 2017 · There are 3 recognized domains, or broadest classification of organism. These are Bacteria, Archaea, and Eukarya. In the simplest case, an organism can be a bacteria, a DNA …

: something having many related parts that function together as a whole. : an individual living thing that carries on the activities of life by means of organs which have separate functions but are …

Aug 18, 2025 · All organisms exhibit a set of shared characteristics that collectively define life. Every organism is composed of one or more cells, the basic units of structure and function in …

Organisms are living entities that exhibit the characteristics of life, including growth, reproduction, response to stimuli, and metabolism. They can be unicellular or multicellular and are classified …

This page distinguishes between single-celled and multicellular organisms, stating that organisms are the fundamental unit of life despite cellular specialization. It emphasizes the cooperative …

Amoebae and bacteria are single-celled organisms. We do not understand the notion of a "psychological" theory that is "nonindividualistic"; the individual organism is psychology's focal …

Thus, individual cells are organisms (unicellular organisms) when they are not attached to other cells but if they are in a cluster (i.e., attached to each other) then the cluster is considered an …

Dec 13, 2025 · Life - Microbes, Cells, Organisms: The sizes of organisms on Earth vary greatly and are not always easy to estimate. On the large end, great stands of poplar trees entirely …