Cell Theory and Levels of Organization

Front

What is a tissue?

Back

A group of the same type of cells that work together for a specific purpose.

Front

What is the origin of a unicellular organism like an Amoeba according to cell theory?

Back

It comes from another pre-existing amoeba cell.

Front

What must all cells do to sustain life?

Back

Digest nutrients and water, excrete waste and fluids, and maintain a homeostasis environment.

Front

What are cells often referred to as?

Back

The building blocks of life.

Front

Who were Robert Hooke, Theodor Schwann, and Matthias Schleiden?

Back

They were scientists responsible for developing the Cell Theory.

Front

What is the Cell Theory?

Back

The theory that all living things are made of cells, and all cells come from pre-existing cells.

Front

What is the basic unit of life?

Back

The cell.

Front

What is an organ?

Back

A structure made up of different types of tissues that work together to perform a specific function.

Front

What is an organ system?

Back

A group of organs that work together to perform complex functions in the body.

Front

What is homeostasis?

Back

The ability of a cell or organism to maintain a stable internal environment.