From a biological perspective, organisms need to display key characteristics in order to be considered living. The acronym “MR.GOSEA” can be used to remember the characteristics of life. These characteristics and their meaning have been identified below.
M = Maintain homeostasis
Homeostasis involves the regulation of an internal structure of an organism within conditions that are conducive to the organism’s survival. Examples of homeostasis include the regulation of body temperature, blood pH levels, and blood sugar levels.
R = Reproduction
All living things reproduce offspring. This may be done sexually or asexually.
G = Grow
All living things grow in size or number.
O= Organization
All living things show some level of organization. From smallest to largest, the biological levels of organization are: cell, tissue, organ, organ system, and organism.
S= Stimuli
All living things respond to stimuli.
E= Energy
All living things require energy. Autotrophs produce their own energy via photosynthesis or chemosynthesis. Heterotrophs must consume other organisms in order to obtain energy.
A= Adapt
All living things adapt to changes in their environments.
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