Characteristics of Life

This page outlines the seven fundamental characteristics of life in biology, providing a comprehensive overview of what defines a living organism.

1. Cells: All living things are composed of one or more cells, which serve as the basic structural and functional units of life.

2. Response: Living organisms respond to their environments and maintain homeostasis, which is crucial for survival.

3. Energy: Living things possess a metabolism, enabling them to control chemical reactions for energy storage and utilization.

4. Adaptation: Organisms are specialized for their specific environments, showcasing evolutionary adaptations.

5. Growth and Development: Living things exhibit growth (increase in size) and development (series of changes associated with a life cycle).

6. Organization: All living organisms display high levels of organization, with specialized parts performing specific functions.

7. Reproduction: Living things can reproduce themselves using a genetic code, ensuring the continuation of their species.

Highlight: An organism must exhibit ALL of these characteristics to be considered living.

Vocabulary: Homeostasis - The process of maintaining internal conditions necessary for life. When an organism can no longer maintain homeostasis, it will die.

Example: The acronym "CREAGOR" can be used to remember these characteristics: Cells, Response, Energy, Adapted, Growth, Organization, Reproduce.

Definition: Metabolism characteristics of life refer to the controlled chemical reactions within organisms that store or release energy for various life processes.

This comprehensive guide serves as an excellent resource for students studying characteristics of life biology, providing a clear and concise overview of the fundamental traits that define living organisms.