Understanding Cells: Unicellular and Multicellular Organisms

What is the basic building block of all living organisms?

• Cells

• Atoms

• Molecules

• Tissues

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

• All living things are made up of cells.

• The cell is the basic unit of life.

• Cells can spontaneously generate.

• All cells come from pre-existing cells.

What is a characteristic of unicellular organisms?

• They consist of a single cell.

• They have specialized cells.

• They are always visible to the naked eye.

• They cannot adapt to environmental changes.

Which of the following is an example of a multicellular organism?

• Human

• Bacterium

• Amoeba

• Yeast

How do multicellular organisms differ from unicellular organisms?

• They have specialized cells.

• They are always smaller.

• They reproduce faster.

• They are less complex.

What advantage do multicellular organisms have over unicellular organisms?

• Specialized cells allow for complex tasks.

• They can live in any environment.

• They reproduce more quickly.

• They are always microscopic.

Why is the cell theory important in biology?

• It provides a framework for studying cells.

• It explains the origin of the universe.

• It describes the chemical composition of cells.

• It outlines the process of photosynthesis.