Which statement is part of the classical cell theory?

• A. All cells contain membrane-bound organelles such as mitochondria.
• B. The nucleus is the control center of the cell and is present in all cells.
• C. All living organisms are composed of one or more cells.
• D. Cells arise spontaneously from nonliving matter under the right conditions.

Answer: (C)

Verified step by step guidance

1. Recall the three main tenets of the classical cell theory, which are foundational principles in cell biology.
2. The first tenet states that all living organisms are composed of one or more cells, emphasizing that cells are the basic unit of life.
3. The second tenet states that the cell is the basic unit of structure and organization in organisms.
4. The third tenet states that all cells arise from pre-existing cells, rejecting the idea of spontaneous generation.
5. Compare each given statement to these tenets to identify which one aligns with the classical cell theory.