7 Characteristics of Living Organisms

Cells are the basic structural and functional units of all living organisms. Example: Human body is made up of trillions of cells.

Metabolism is the sum of all chemical reactions in an organism that provide energy and build cellular components. Example: Digestion of food to release energy.

Catabolism and Anabolism

Growth is the process of increasing in size and number of cells. Example: A child growing taller over time.

Excretion is the removal of metabolic waste products from the body. Example: Kidneys filtering urine to remove waste.

Movement refers to the ability to change position or move parts of the body. Example: Muscles contracting to move limbs.

Responsiveness is the ability to detect and respond to changes in the environment. Example: Pupils dilating in low light.