![]() All organisms need to maintain a stable environment in order to sustain cell metabolism that is essential to life. This process was defined first by Claude Bernard and then by Walter Cannon. HomeostasisĪll living organisms maintain homeostasis, which is the process by which the internal environment of the body is regulated in order to maintain a stable state. Cells that are of the same type combine and form tissues which in turn form organs. These organelles are made up of carbohydrates, proteins, lipids, and nucleic acids and perform functions like producing energy in the form of ATP, transferring molecules, synthesis of proteins, etc. which are the equivalents of organs in our body. A cell consists of organelles like mitochondria, nucleus, Golgi apparatus, etc. There are unicellular organisms that are made up of just one cell and multicellular organisms that are made up of many cells with each cell having specific functions. All living beings are composed of one or more cells. CellsĬells are the basic units of life of every living organism. ![]() Here we take a look at what are the characteristic features of life. While there are some characteristics that are species specific, these seven life characteristics are common to all living beings. They share these basic properties of life, which categorizes them as living and therefore different from inanimate beings. All living organisms exhibit these features. If you study biology, characteristics that define life is one of the foremost things that you will learn. All living organisms are made up of cells, use energy, maintain homeostasis, respond to stimuli, reproduce, adapt to changes in the environment, and pass on characteristics to their off-springs. If something has life then it will be self-sustaining in nature compared to something that does not possess life, either because it is dead or it is inanimate. According to biology, which is the science that deals with the study of living organisms, it is life that distinguishes active organisms from matter that is inorganic in nature.
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