Front

What is the cell theory?

Back

The cell theory states that all living organisms are composed of cells, the cell is the basic unit of life, and all cells arise from pre-existing cells.

Front

Who proposed that all plants are made of cells?

Back

Matthias Schleiden.

Front

Who concluded that all animals are made of cells?

Back

Theodor Schwann.

Front

Who was the first to observe bacteria?

Back

Anton van Leeuwenhoek.

Front

What type of cell lacks a true nucleus?

Back

Prokaryote.

Front

What type of cell has a true nucleus?

Back

Eukaryote.

Front

What is a prokaryotic cell?

Back

A prokaryotic cell is a simple, single-celled organism that lacks a nucleus and membrane-bound organelles.

Front

What is a eukaryotic cell?

Back

A eukaryotic cell is a complex cell that has a nucleus and membrane-bound organelles.

Front

What did Robert Hooke discover?

Back

Robert Hooke discovered cells by observing cork under a microscope.

Front

What is the significance of Rudolf Virchow's contribution to cell theory?

Back

Rudolf Virchow concluded that all cells come from pre-existing cells, which is a key principle of cell theory.