5th Grade Body Systems

The nervous system sends electrical signals to all other body systems, allowing communication and coordination.

An amoeba is an example of a single-celled organism.

A bacterial cell is a complete organism.

Multicellular organisms need transport systems because most of their cells cannot exchange gases with the outside environment.

Both have a way to get rid of waste materials.

A multicellular organism is made up of many cells that work together.

The circulatory system transports blood, nutrients, and oxygen throughout the body.

The digestive system breaks down food into nutrients that the body can use.

A cell is the basic unit of life that can perform all life processes.

Single-celled organisms consist of one cell, while multicellular organisms are made up of many cells.