Cell Theory and Its Principles

Who concluded that plants are made of cells?

• Rudolf Virchow

• Theodor Schwann

• Robert Hooke

• Matthias Schleiden

What did Rudolf Virchow state about the formation of new cells?

• New cells arise from existing cells.

• New cells form spontaneously.

• New cells are created by plants only.

• New cells are created by animals only.

Which of the following is NOT a principle of cell theory?

• All living organisms are made of one or more cells.

• Cells are the basic units of structure and function in organisms.

• Cells can form spontaneously without existing cells.

• All cells come from previously existing cells.

What is the basic unit of structure and function in all living organisms?

• Organs

• Tissues

• Cells

• Atoms

Which organisms are made of one or more cells according to cell theory?

• Only animals

• All living organisms

• Only bacteria

• Only plants