Which of the following correctly lists the biological levels of organization from smallest to largest?

• A. Cell, tissue, organ, organ system, organism
• B. Organ system, organ, tissue, cell, organism
• C. Organism, organ system, organ, tissue, cell
• D. Tissue, cell, organ, organism, organ system

Answer: (A)

Verified step by step guidance

1. Understand the concept of biological levels of organization: Biological organization refers to the hierarchy of complex biological structures and systems that define life, starting from the smallest unit (cell) to the largest (organism).
2. Identify the smallest unit of life: The cell is the basic structural and functional unit of all living organisms. It is the smallest level in the hierarchy.
3. Recognize the next level: A tissue is a group of similar cells that work together to perform a specific function.
4. Determine the subsequent levels: An organ is made up of multiple tissues working together to perform a specific function. An organ system consists of multiple organs that work together to perform a broader function. Finally, an organism is the complete living entity made up of all these systems.
5. Compare the given options: Analyze each option to determine which one correctly lists the levels of biological organization in the order from smallest to largest: Cell, tissue, organ, organ system, organism.