Characteristics of Living Organisms What makes something alive?

Key Characteristics Organized Structure Have an organized structure, hierarchical systems Cells Made of cells or cell products. Reproduction Have an ability to reproduce.

More Key Characteristics Growth / Development Have an ability to grow and develop based on a genetic program / DNA. Response Have an ability to respond to the environment.

More Key Characteristics Metabolism Obtain and use energy to maintain cell functions. Autotrophic Heterotrophic Homeostasis Maintain relatively constant internal body or cell conditions.

Deeper Thinking Emergent Quality The whole is greater than the sum of the parts. It’s a system!

What is Biology? Bio = Life Logos = Study, Logic The study of living organisms and their environment.

Disciplines of Study Pure / Basic Science Genetics, cytology, embryology, anatomy, zoology, botany Applied Science Medicine, forestry, agriculture, fisheries