Front

What is a neuron?

Back

A neuron is a specialized cell that sends and receives electrical messages from the brain.

Front

What is the lowest (simplest) level of organization in living things?

Back

The lowest level of organization is a cell.

Front

What is the highest level of organization in living things?

Back

The highest level of organization is an organism.

Front

What is xylem?

Back

Xylem is a type of vascular tissue in plants that transports nutrients and water from the roots to the stems and leaves.

Front

What level of organization is xylem classified as?

Back

Xylem is classified as tissue.

Front

What do organs that work together form?

Back

Organs that work together form an organ system.

Front

What is the definition of an organ?

Back

An organ is a group of tissues that work together to perform a specific function.

Front

What is the definition of tissue?

Back

Tissue is a group of similar cells that work together to perform a specific function.

Front

What is an organism?

Back

An organism is a living being that can function independently.

Front

What is an organ system?

Back

An organ system is a group of organs that work together to perform complex functions.