Unity, Diversity, & Evolution

All Life Forms Have Common Features Unity All Life Forms Have Common Features

Common Properties of Life

Made of Cells Basic unit of structure & function

Maintain a constant internal environment (homeostasis) Examples: temperature, sugar level, salt level, hydration, etc.

Metabolism Total of all chemical reactions. Examples:

Respond to Stimuli Examples:

Reproduce Essential to survival of species.

Heredity & Evolution Heredity: Traits passed to offspring. Info found in DNA.

Evolve Evolution: Change in species over generations.

Grow and Develop

Growth- change in number of cells which leads to increase in size. Development- change in a single individual during life cycle.

Cells- Similar but Different

Review Game: What characteristic…

Your reaction to something in your environment RESPONSE TO A STIMULUS

The ability to maintain a constant internal environment Homeostasis

All the building up and breaking down processes in your body Metabolism

The ability of a species to change over time Evolution

This molecule is found in all living things and gives us our traits DNA

All living things are made of… Cells

Viruses?